28758520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{379}}^1$

素因数の和:668

約数の個数: 64

約数和(自身を含む): 74419200

約数和(自身を除く): 45660680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 271, 280, 379, 542, 758, 1084, 1355, 1516, 1895, 1897, 2168, 2653, 2710, 3032, 3790, 3794, 5306, 5420, 7580, 7588, 9485, 10612, 10840, 13265, 15160, 15176, 18970, 21224, 26530, 37940, 53060, 75880, 102709, 106120, 205418, 410836, 513545, 718963, 821672, 1027090, 1437926, 2054180, 2875852, 3594815, 4108360, 5751704, 7189630, 14379260, 28758520]

約数ペア:

[(1, 28758520), (2, 14379260), (4, 7189630), (5, 5751704), (7, 4108360), (8, 3594815), (10, 2875852), (14, 2054180), (20, 1437926), (28, 1027090), (35, 821672), (40, 718963), (56, 513545), (70, 410836), (140, 205418), (271, 106120), (280, 102709), (379, 75880), (542, 53060), (758, 37940), (1084, 26530), (1355, 21224), (1516, 18970), (1895, 15176), (1897, 15160), (2168, 13265), (2653, 10840), (2710, 10612), (3032, 9485), (3790, 7588), (3794, 7580), (5306, 5420)]