28218840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18089}}^1$

素因数の和:18116

約数の個数: 64

約数和(自身を含む): 91173600

約数和(自身を除く): 62954760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 18089, 36178, 54267, 72356, 90445, 108534, 144712, 180890, 217068, 235157, 271335, 361780, 434136, 470314, 542670, 705471, 723560, 940628, 1085340, 1175785, 1410942, 1881256, 2170680, 2351570, 2821884, 3527355, 4703140, 5643768, 7054710, 9406280, 14109420, 28218840]

約数ペア:

[(1, 28218840), (2, 14109420), (3, 9406280), (4, 7054710), (5, 5643768), (6, 4703140), (8, 3527355), (10, 2821884), (12, 2351570), (13, 2170680), (15, 1881256), (20, 1410942), (24, 1175785), (26, 1085340), (30, 940628), (39, 723560), (40, 705471), (52, 542670), (60, 470314), (65, 434136), (78, 361780), (104, 271335), (120, 235157), (130, 217068), (156, 180890), (195, 144712), (260, 108534), (312, 90445), (390, 72356), (520, 54267), (780, 36178), (1560, 18089)]