2680340

素因数分解:

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

素因数の和:109

約数の個数: 48

約数和(自身を含む): 6197520

約数和(自身を除く): 3517180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 169, 244, 260, 305, 338, 610, 676, 793, 845, 1220, 1586, 1690, 2197, 3172, 3380, 3965, 4394, 7930, 8788, 10309, 10985, 15860, 20618, 21970, 41236, 43940, 51545, 103090, 134017, 206180, 268034, 536068, 670085, 1340170, 2680340]

約数ペア:

[(1, 2680340), (2, 1340170), (4, 670085), (5, 536068), (10, 268034), (13, 206180), (20, 134017), (26, 103090), (52, 51545), (61, 43940), (65, 41236), (122, 21970), (130, 20618), (169, 15860), (244, 10985), (260, 10309), (305, 8788), (338, 7930), (610, 4394), (676, 3965), (793, 3380), (845, 3172), (1220, 2197), (1586, 1690)]