64420240

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:416

約数の個数: 80

約数和(自身を含む): 157989888

約数和(自身を除く): 93569648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 157, 184, 223, 230, 314, 368, 446, 460, 628, 785, 892, 920, 1115, 1256, 1570, 1784, 1840, 2230, 2512, 3140, 3568, 3611, 4460, 5129, 6280, 7222, 8920, 10258, 12560, 14444, 17840, 18055, 20516, 25645, 28888, 35011, 36110, 41032, 51290, 57776, 70022, 72220, 82064, 102580, 140044, 144440, 175055, 205160, 280088, 288880, 350110, 410320, 560176, 700220, 805253, 1400440, 1610506, 2800880, 3221012, 4026265, 6442024, 8052530, 12884048, 16105060, 32210120, 64420240]

約数ペア:

[(1, 64420240), (2, 32210120), (4, 16105060), (5, 12884048), (8, 8052530), (10, 6442024), (16, 4026265), (20, 3221012), (23, 2800880), (40, 1610506), (46, 1400440), (80, 805253), (92, 700220), (115, 560176), (157, 410320), (184, 350110), (223, 288880), (230, 280088), (314, 205160), (368, 175055), (446, 144440), (460, 140044), (628, 102580), (785, 82064), (892, 72220), (920, 70022), (1115, 57776), (1256, 51290), (1570, 41032), (1784, 36110), (1840, 35011), (2230, 28888), (2512, 25645), (3140, 20516), (3568, 18055), (3611, 17840), (4460, 14444), (5129, 12560), (6280, 10258), (7222, 8920)]