18112120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{571}}^1$

素因数の和:656

約数の個数: 64

約数和(自身を含む): 44684640

約数和(自身を除く): 26572520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 571, 610, 793, 1142, 1220, 1586, 2284, 2440, 2855, 3172, 3965, 4568, 5710, 6344, 7423, 7930, 11420, 14846, 15860, 22840, 29692, 31720, 34831, 37115, 59384, 69662, 74230, 139324, 148460, 174155, 278648, 296920, 348310, 452803, 696620, 905606, 1393240, 1811212, 2264015, 3622424, 4528030, 9056060, 18112120]

約数ペア:

[(1, 18112120), (2, 9056060), (4, 4528030), (5, 3622424), (8, 2264015), (10, 1811212), (13, 1393240), (20, 905606), (26, 696620), (40, 452803), (52, 348310), (61, 296920), (65, 278648), (104, 174155), (122, 148460), (130, 139324), (244, 74230), (260, 69662), (305, 59384), (488, 37115), (520, 34831), (571, 31720), (610, 29692), (793, 22840), (1142, 15860), (1220, 14846), (1586, 11420), (2284, 7930), (2440, 7423), (2855, 6344), (3172, 5710), (3965, 4568)]