2545240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 6415200

約数和(自身を除く): 3869960

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 197, 323, 340, 380, 394, 646, 680, 760, 788, 985, 1292, 1576, 1615, 1970, 2584, 3230, 3349, 3743, 3940, 6460, 6698, 7486, 7880, 12920, 13396, 14972, 16745, 18715, 26792, 29944, 33490, 37430, 63631, 66980, 74860, 127262, 133960, 149720, 254524, 318155, 509048, 636310, 1272620, 2545240]

約数ペア:

[(1, 2545240), (2, 1272620), (4, 636310), (5, 509048), (8, 318155), (10, 254524), (17, 149720), (19, 133960), (20, 127262), (34, 74860), (38, 66980), (40, 63631), (68, 37430), (76, 33490), (85, 29944), (95, 26792), (136, 18715), (152, 16745), (170, 14972), (190, 13396), (197, 12920), (323, 7880), (340, 7486), (380, 6698), (394, 6460), (646, 3940), (680, 3743), (760, 3349), (788, 3230), (985, 2584), (1292, 1970), (1576, 1615)]