641240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:92

約数の個数: 64

約数和(自身を含む): 1632960

約数和(自身を除く): 991720

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 41, 46, 68, 82, 85, 92, 115, 136, 164, 170, 184, 205, 230, 328, 340, 391, 410, 460, 680, 697, 782, 820, 920, 943, 1394, 1564, 1640, 1886, 1955, 2788, 3128, 3485, 3772, 3910, 4715, 5576, 6970, 7544, 7820, 9430, 13940, 15640, 16031, 18860, 27880, 32062, 37720, 64124, 80155, 128248, 160310, 320620, 641240]

約数ペア:

[(1, 641240), (2, 320620), (4, 160310), (5, 128248), (8, 80155), (10, 64124), (17, 37720), (20, 32062), (23, 27880), (34, 18860), (40, 16031), (41, 15640), (46, 13940), (68, 9430), (82, 7820), (85, 7544), (92, 6970), (115, 5576), (136, 4715), (164, 3910), (170, 3772), (184, 3485), (205, 3128), (230, 2788), (328, 1955), (340, 1886), (391, 1640), (410, 1564), (460, 1394), (680, 943), (697, 920), (782, 820)]