25801240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1997}}^1$

素因数の和:2044

約数の個数: 64

約数和(自身を含む): 64735200

約数和(自身を除く): 38933960

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1615, 1997, 2584, 3230, 3994, 6460, 7988, 9985, 12920, 15976, 19970, 33949, 37943, 39940, 67898, 75886, 79880, 135796, 151772, 169745, 189715, 271592, 303544, 339490, 379430, 645031, 678980, 758860, 1290062, 1357960, 1517720, 2580124, 3225155, 5160248, 6450310, 12900620, 25801240]

約数ペア:

[(1, 25801240), (2, 12900620), (4, 6450310), (5, 5160248), (8, 3225155), (10, 2580124), (17, 1517720), (19, 1357960), (20, 1290062), (34, 758860), (38, 678980), (40, 645031), (68, 379430), (76, 339490), (85, 303544), (95, 271592), (136, 189715), (152, 169745), (170, 151772), (190, 135796), (323, 79880), (340, 75886), (380, 67898), (646, 39940), (680, 37943), (760, 33949), (1292, 19970), (1615, 15976), (1997, 12920), (2584, 9985), (3230, 7988), (3994, 6460)]