40791920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{643}}^1$

素因数の和:730

約数の個数: 80

約数和(自身を含む): 103972512

約数和(自身を除く): 63180592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 61, 65, 80, 104, 122, 130, 208, 244, 260, 305, 488, 520, 610, 643, 793, 976, 1040, 1220, 1286, 1586, 2440, 2572, 3172, 3215, 3965, 4880, 5144, 6344, 6430, 7930, 8359, 10288, 12688, 12860, 15860, 16718, 25720, 31720, 33436, 39223, 41795, 51440, 63440, 66872, 78446, 83590, 133744, 156892, 167180, 196115, 313784, 334360, 392230, 509899, 627568, 668720, 784460, 1019798, 1568920, 2039596, 2549495, 3137840, 4079192, 5098990, 8158384, 10197980, 20395960, 40791920]

約数ペア:

[(1, 40791920), (2, 20395960), (4, 10197980), (5, 8158384), (8, 5098990), (10, 4079192), (13, 3137840), (16, 2549495), (20, 2039596), (26, 1568920), (40, 1019798), (52, 784460), (61, 668720), (65, 627568), (80, 509899), (104, 392230), (122, 334360), (130, 313784), (208, 196115), (244, 167180), (260, 156892), (305, 133744), (488, 83590), (520, 78446), (610, 66872), (643, 63440), (793, 51440), (976, 41795), (1040, 39223), (1220, 33436), (1286, 31720), (1586, 25720), (2440, 16718), (2572, 15860), (3172, 12860), (3215, 12688), (3965, 10288), (4880, 8359), (5144, 7930), (6344, 6430)]