31355220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{659}}^1$

素因数の和:745

約数の個数: 96

約数和(自身を含む): 96243840

約数和(自身を除く): 64888620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 61, 65, 78, 122, 130, 156, 183, 195, 244, 260, 305, 366, 390, 610, 659, 732, 780, 793, 915, 1220, 1318, 1586, 1830, 1977, 2379, 2636, 3172, 3295, 3660, 3954, 3965, 4758, 6590, 7908, 7930, 8567, 9516, 9885, 11895, 13180, 15860, 17134, 19770, 23790, 25701, 34268, 39540, 40199, 42835, 47580, 51402, 80398, 85670, 102804, 120597, 128505, 160796, 171340, 200995, 241194, 257010, 401990, 482388, 514020, 522587, 602985, 803980, 1045174, 1205970, 1567761, 2090348, 2411940, 2612935, 3135522, 5225870, 6271044, 7838805, 10451740, 15677610, 31355220]

約数ペア:

[(1, 31355220), (2, 15677610), (3, 10451740), (4, 7838805), (5, 6271044), (6, 5225870), (10, 3135522), (12, 2612935), (13, 2411940), (15, 2090348), (20, 1567761), (26, 1205970), (30, 1045174), (39, 803980), (52, 602985), (60, 522587), (61, 514020), (65, 482388), (78, 401990), (122, 257010), (130, 241194), (156, 200995), (183, 171340), (195, 160796), (244, 128505), (260, 120597), (305, 102804), (366, 85670), (390, 80398), (610, 51402), (659, 47580), (732, 42835), (780, 40199), (793, 39540), (915, 34268), (1220, 25701), (1318, 23790), (1586, 19770), (1830, 17134), (1977, 15860), (2379, 13180), (2636, 11895), (3172, 9885), (3295, 9516), (3660, 8567), (3954, 7930), (3965, 7908), (4758, 6590)]