256205880

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5351}}^1$

素因数の和:5394

約数の個数: 192

約数和(自身を含む): 1001894400

約数和(自身を除く): 745688520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 19, 20, 21, 24, 28, 30, 35, 36, 38, 40, 42, 45, 56, 57, 60, 63, 70, 72, 76, 84, 90, 95, 105, 114, 120, 126, 133, 140, 152, 168, 171, 180, 190, 210, 228, 252, 266, 280, 285, 315, 342, 360, 380, 399, 420, 456, 504, 532, 570, 630, 665, 684, 760, 798, 840, 855, 1064, 1140, 1197, 1260, 1330, 1368, 1596, 1710, 1995, 2280, 2394, 2520, 2660, 3192, 3420, 3990, 4788, 5320, 5351, 5985, 6840, 7980, 9576, 10702, 11970, 15960, 16053, 21404, 23940, 26755, 32106, 37457, 42808, 47880, 48159, 53510, 64212, 74914, 80265, 96318, 101669, 107020, 112371, 128424, 149828, 160530, 187285, 192636, 203338, 214040, 224742, 240795, 299656, 305007, 321060, 337113, 374570, 385272, 406676, 449484, 481590, 508345, 561855, 610014, 642120, 674226, 711683, 749140, 813352, 898968, 915021, 963180, 1016690, 1123710, 1220028, 1348452, 1423366, 1498280, 1525035, 1685565, 1830042, 1926360, 2033380, 2135049, 2247420, 2440056, 2696904, 2846732, 3050070, 3371130, 3558415, 3660084, 4066760, 4270098, 4494840, 4575105, 5693464, 6100140, 6405147, 6742260, 7116830, 7320168, 8540196, 9150210, 10675245, 12200280, 12810294, 13484520, 14233660, 17080392, 18300420, 21350490, 25620588, 28467320, 32025735, 36600840, 42700980, 51241176, 64051470, 85401960, 128102940, 256205880]

約数ペア:

[(1, 256205880), (2, 128102940), (3, 85401960), (4, 64051470), (5, 51241176), (6, 42700980), (7, 36600840), (8, 32025735), (9, 28467320), (10, 25620588), (12, 21350490), (14, 18300420), (15, 17080392), (18, 14233660), (19, 13484520), (20, 12810294), (21, 12200280), (24, 10675245), (28, 9150210), (30, 8540196), (35, 7320168), (36, 7116830), (38, 6742260), (40, 6405147), (42, 6100140), (45, 5693464), (56, 4575105), (57, 4494840), (60, 4270098), (63, 4066760), (70, 3660084), (72, 3558415), (76, 3371130), (84, 3050070), (90, 2846732), (95, 2696904), (105, 2440056), (114, 2247420), (120, 2135049), (126, 2033380), (133, 1926360), (140, 1830042), (152, 1685565), (168, 1525035), (171, 1498280), (180, 1423366), (190, 1348452), (210, 1220028), (228, 1123710), (252, 1016690), (266, 963180), (280, 915021), (285, 898968), (315, 813352), (342, 749140), (360, 711683), (380, 674226), (399, 642120), (420, 610014), (456, 561855), (504, 508345), (532, 481590), (570, 449484), (630, 406676), (665, 385272), (684, 374570), (760, 337113), (798, 321060), (840, 305007), (855, 299656), (1064, 240795), (1140, 224742), (1197, 214040), (1260, 203338), (1330, 192636), (1368, 187285), (1596, 160530), (1710, 149828), (1995, 128424), (2280, 112371), (2394, 107020), (2520, 101669), (2660, 96318), (3192, 80265), (3420, 74914), (3990, 64212), (4788, 53510), (5320, 48159), (5351, 47880), (5985, 42808), (6840, 37457), (7980, 32106), (9576, 26755), (10702, 23940), (11970, 21404), (15960, 16053)]