256905990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{761}}^1$

素因数の和:827

約数の個数: 144

約数和(自身を含む): 758878848

約数和(自身を除く): 501972858

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 31, 33, 45, 55, 62, 66, 90, 93, 99, 110, 121, 155, 165, 186, 198, 242, 279, 310, 330, 341, 363, 465, 495, 558, 605, 682, 726, 761, 930, 990, 1023, 1089, 1210, 1395, 1522, 1705, 1815, 2046, 2178, 2283, 2790, 3069, 3410, 3630, 3751, 3805, 4566, 5115, 5445, 6138, 6849, 7502, 7610, 8371, 10230, 10890, 11253, 11415, 13698, 15345, 16742, 18755, 22506, 22830, 23591, 25113, 30690, 33759, 34245, 37510, 41855, 47182, 50226, 56265, 67518, 68490, 70773, 75339, 83710, 92081, 112530, 117955, 125565, 141546, 150678, 168795, 184162, 212319, 235910, 251130, 259501, 276243, 337590, 353865, 376695, 424638, 460405, 519002, 552486, 707730, 753390, 778503, 828729, 920810, 1061595, 1297505, 1381215, 1557006, 1657458, 2123190, 2335509, 2595010, 2762430, 2854511, 3892515, 4143645, 4671018, 5709022, 7785030, 8287290, 8563533, 11677545, 14272555, 17127066, 23355090, 25690599, 28545110, 42817665, 51381198, 85635330, 128452995, 256905990]

約数ペア:

[(1, 256905990), (2, 128452995), (3, 85635330), (5, 51381198), (6, 42817665), (9, 28545110), (10, 25690599), (11, 23355090), (15, 17127066), (18, 14272555), (22, 11677545), (30, 8563533), (31, 8287290), (33, 7785030), (45, 5709022), (55, 4671018), (62, 4143645), (66, 3892515), (90, 2854511), (93, 2762430), (99, 2595010), (110, 2335509), (121, 2123190), (155, 1657458), (165, 1557006), (186, 1381215), (198, 1297505), (242, 1061595), (279, 920810), (310, 828729), (330, 778503), (341, 753390), (363, 707730), (465, 552486), (495, 519002), (558, 460405), (605, 424638), (682, 376695), (726, 353865), (761, 337590), (930, 276243), (990, 259501), (1023, 251130), (1089, 235910), (1210, 212319), (1395, 184162), (1522, 168795), (1705, 150678), (1815, 141546), (2046, 125565), (2178, 117955), (2283, 112530), (2790, 92081), (3069, 83710), (3410, 75339), (3630, 70773), (3751, 68490), (3805, 67518), (4566, 56265), (5115, 50226), (5445, 47182), (6138, 41855), (6849, 37510), (7502, 34245), (7610, 33759), (8371, 30690), (10230, 25113), (10890, 23591), (11253, 22830), (11415, 22506), (13698, 18755), (15345, 16742)]