21310020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:135

約数の個数: 192

約数和(自身を含む): 73113600

約数和(自身を除く): 51803580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 31, 36, 38, 45, 54, 57, 60, 62, 67, 76, 90, 93, 95, 108, 114, 124, 134, 135, 155, 171, 180, 186, 190, 201, 228, 268, 270, 279, 285, 310, 335, 342, 372, 380, 402, 465, 513, 540, 558, 570, 589, 603, 620, 670, 684, 804, 837, 855, 930, 1005, 1026, 1116, 1140, 1178, 1206, 1273, 1340, 1395, 1674, 1710, 1767, 1809, 1860, 2010, 2052, 2077, 2356, 2412, 2546, 2565, 2790, 2945, 3015, 3348, 3420, 3534, 3618, 3819, 4020, 4154, 4185, 5092, 5130, 5301, 5580, 5890, 6030, 6231, 6365, 7068, 7236, 7638, 8308, 8370, 8835, 9045, 10260, 10385, 10602, 11457, 11780, 12060, 12462, 12730, 15276, 15903, 16740, 17670, 18090, 18693, 19095, 20770, 21204, 22914, 24924, 25460, 26505, 31155, 31806, 34371, 35340, 36180, 37386, 38190, 39463, 41540, 45828, 53010, 56079, 57285, 62310, 63612, 68742, 74772, 76380, 78926, 79515, 93465, 106020, 112158, 114570, 118389, 124620, 137484, 157852, 159030, 171855, 186930, 197315, 224316, 229140, 236778, 280395, 318060, 343710, 355167, 373860, 394630, 473556, 560790, 591945, 687420, 710334, 789260, 1065501, 1121580, 1183890, 1420668, 1775835, 2131002, 2367780, 3551670, 4262004, 5327505, 7103340, 10655010, 21310020]

約数ペア:

[(1, 21310020), (2, 10655010), (3, 7103340), (4, 5327505), (5, 4262004), (6, 3551670), (9, 2367780), (10, 2131002), (12, 1775835), (15, 1420668), (18, 1183890), (19, 1121580), (20, 1065501), (27, 789260), (30, 710334), (31, 687420), (36, 591945), (38, 560790), (45, 473556), (54, 394630), (57, 373860), (60, 355167), (62, 343710), (67, 318060), (76, 280395), (90, 236778), (93, 229140), (95, 224316), (108, 197315), (114, 186930), (124, 171855), (134, 159030), (135, 157852), (155, 137484), (171, 124620), (180, 118389), (186, 114570), (190, 112158), (201, 106020), (228, 93465), (268, 79515), (270, 78926), (279, 76380), (285, 74772), (310, 68742), (335, 63612), (342, 62310), (372, 57285), (380, 56079), (402, 53010), (465, 45828), (513, 41540), (540, 39463), (558, 38190), (570, 37386), (589, 36180), (603, 35340), (620, 34371), (670, 31806), (684, 31155), (804, 26505), (837, 25460), (855, 24924), (930, 22914), (1005, 21204), (1026, 20770), (1116, 19095), (1140, 18693), (1178, 18090), (1206, 17670), (1273, 16740), (1340, 15903), (1395, 15276), (1674, 12730), (1710, 12462), (1767, 12060), (1809, 11780), (1860, 11457), (2010, 10602), (2052, 10385), (2077, 10260), (2356, 9045), (2412, 8835), (2546, 8370), (2565, 8308), (2790, 7638), (2945, 7236), (3015, 7068), (3348, 6365), (3420, 6231), (3534, 6030), (3618, 5890), (3819, 5580), (4020, 5301), (4154, 5130), (4185, 5092)]