256308156

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{2131}}^1$

素因数の和:2411

約数の個数: 72

約数和(自身を含む): 700771344

約数和(自身を除く): 444463188

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 257, 468, 514, 771, 1028, 1542, 2131, 2313, 3084, 3341, 4262, 4626, 6393, 6682, 8524, 9252, 10023, 12786, 13364, 19179, 20046, 25572, 27703, 30069, 38358, 40092, 55406, 60138, 76716, 83109, 110812, 120276, 166218, 249327, 332436, 498654, 547667, 997308, 1095334, 1643001, 2190668, 3286002, 4929003, 6572004, 7119671, 9858006, 14239342, 19716012, 21359013, 28478684, 42718026, 64077039, 85436052, 128154078, 256308156]

約数ペア:

[(1, 256308156), (2, 128154078), (3, 85436052), (4, 64077039), (6, 42718026), (9, 28478684), (12, 21359013), (13, 19716012), (18, 14239342), (26, 9858006), (36, 7119671), (39, 6572004), (52, 4929003), (78, 3286002), (117, 2190668), (156, 1643001), (234, 1095334), (257, 997308), (468, 547667), (514, 498654), (771, 332436), (1028, 249327), (1542, 166218), (2131, 120276), (2313, 110812), (3084, 83109), (3341, 76716), (4262, 60138), (4626, 55406), (6393, 40092), (6682, 38358), (8524, 30069), (9252, 27703), (10023, 25572), (12786, 20046), (13364, 19179)]