28756520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3253}}^1$

素因数の和:3294

約数の個数: 64

約数和(自身を含む): 73800720

約数和(自身を除く): 45044200

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 3253, 4420, 6506, 8840, 13012, 16265, 26024, 32530, 42289, 55301, 65060, 84578, 110602, 130120, 169156, 211445, 221204, 276505, 338312, 422890, 442408, 553010, 718913, 845780, 1106020, 1437826, 1691560, 2212040, 2875652, 3594565, 5751304, 7189130, 14378260, 28756520]

約数ペア:

[(1, 28756520), (2, 14378260), (4, 7189130), (5, 5751304), (8, 3594565), (10, 2875652), (13, 2212040), (17, 1691560), (20, 1437826), (26, 1106020), (34, 845780), (40, 718913), (52, 553010), (65, 442408), (68, 422890), (85, 338312), (104, 276505), (130, 221204), (136, 211445), (170, 169156), (221, 130120), (260, 110602), (340, 84578), (442, 65060), (520, 55301), (680, 42289), (884, 32530), (1105, 26024), (1768, 16265), (2210, 13012), (3253, 8840), (4420, 6506)]