256432940

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 578237184

約数和(自身を除く): 321804244

約数列:

[1, 2, 4, 5, 10, 20, 37, 47, 73, 74, 94, 101, 146, 148, 185, 188, 202, 235, 292, 365, 370, 404, 470, 505, 730, 740, 940, 1010, 1460, 1739, 2020, 2701, 3431, 3478, 3737, 4747, 5402, 6862, 6956, 7373, 7474, 8695, 9494, 10804, 13505, 13724, 14746, 14948, 17155, 17390, 18685, 18988, 23735, 27010, 29492, 34310, 34780, 36865, 37370, 47470, 54020, 68620, 73730, 74740, 94940, 126947, 147460, 175639, 253894, 272801, 346531, 351278, 507788, 545602, 634735, 693062, 702556, 878195, 1091204, 1269470, 1364005, 1386124, 1732655, 1756390, 2538940, 2728010, 3465310, 3512780, 5456020, 6930620, 12821647, 25643294, 51286588, 64108235, 128216470, 256432940]

約数ペア:

[(1, 256432940), (2, 128216470), (4, 64108235), (5, 51286588), (10, 25643294), (20, 12821647), (37, 6930620), (47, 5456020), (73, 3512780), (74, 3465310), (94, 2728010), (101, 2538940), (146, 1756390), (148, 1732655), (185, 1386124), (188, 1364005), (202, 1269470), (235, 1091204), (292, 878195), (365, 702556), (370, 693062), (404, 634735), (470, 545602), (505, 507788), (730, 351278), (740, 346531), (940, 272801), (1010, 253894), (1460, 175639), (1739, 147460), (2020, 126947), (2701, 94940), (3431, 74740), (3478, 73730), (3737, 68620), (4747, 54020), (5402, 47470), (6862, 37370), (6956, 36865), (7373, 34780), (7474, 34310), (8695, 29492), (9494, 27010), (10804, 23735), (13505, 18988), (13724, 18685), (14746, 17390), (14948, 17155)]