28040220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{521}}^1$

素因数の和:572

約数の個数: 144

約数和(自身を含む): 95764032

約数和(自身を除く): 67723812

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 23, 26, 30, 36, 39, 45, 46, 52, 60, 65, 69, 78, 90, 92, 115, 117, 130, 138, 156, 180, 195, 207, 230, 234, 260, 276, 299, 345, 390, 414, 460, 468, 521, 585, 598, 690, 780, 828, 897, 1035, 1042, 1170, 1196, 1380, 1495, 1563, 1794, 2070, 2084, 2340, 2605, 2691, 2990, 3126, 3588, 4140, 4485, 4689, 5210, 5382, 5980, 6252, 6773, 7815, 8970, 9378, 10420, 10764, 11983, 13455, 13546, 15630, 17940, 18756, 20319, 23445, 23966, 26910, 27092, 31260, 33865, 35949, 40638, 46890, 47932, 53820, 59915, 60957, 67730, 71898, 81276, 93780, 101595, 107847, 119830, 121914, 135460, 143796, 155779, 179745, 203190, 215694, 239660, 243828, 304785, 311558, 359490, 406380, 431388, 467337, 539235, 609570, 623116, 718980, 778895, 934674, 1078470, 1219140, 1402011, 1557790, 1869348, 2156940, 2336685, 2804022, 3115580, 4673370, 5608044, 7010055, 9346740, 14020110, 28040220]

約数ペア:

[(1, 28040220), (2, 14020110), (3, 9346740), (4, 7010055), (5, 5608044), (6, 4673370), (9, 3115580), (10, 2804022), (12, 2336685), (13, 2156940), (15, 1869348), (18, 1557790), (20, 1402011), (23, 1219140), (26, 1078470), (30, 934674), (36, 778895), (39, 718980), (45, 623116), (46, 609570), (52, 539235), (60, 467337), (65, 431388), (69, 406380), (78, 359490), (90, 311558), (92, 304785), (115, 243828), (117, 239660), (130, 215694), (138, 203190), (156, 179745), (180, 155779), (195, 143796), (207, 135460), (230, 121914), (234, 119830), (260, 107847), (276, 101595), (299, 93780), (345, 81276), (390, 71898), (414, 67730), (460, 60957), (468, 59915), (521, 53820), (585, 47932), (598, 46890), (690, 40638), (780, 35949), (828, 33865), (897, 31260), (1035, 27092), (1042, 26910), (1170, 23966), (1196, 23445), (1380, 20319), (1495, 18756), (1563, 17940), (1794, 15630), (2070, 13546), (2084, 13455), (2340, 11983), (2605, 10764), (2691, 10420), (2990, 9378), (3126, 8970), (3588, 7815), (4140, 6773), (4485, 6252), (4689, 5980), (5210, 5382)]