281975980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{8963}}^1$

素因数の和:9007

約数の個数: 72

約数和(自身を含む): 701020656

約数和(自身を除く): 419044676

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 605, 715, 1210, 1430, 1573, 2420, 2860, 3146, 6292, 7865, 8963, 15730, 17926, 31460, 35852, 44815, 89630, 98593, 116519, 179260, 197186, 233038, 394372, 466076, 492965, 582595, 985930, 1084523, 1165190, 1281709, 1971860, 2169046, 2330380, 2563418, 4338092, 5126836, 5422615, 6408545, 10845230, 12817090, 14098799, 21690460, 25634180, 28197598, 56395196, 70493995, 140987990, 281975980]

約数ペア:

[(1, 281975980), (2, 140987990), (4, 70493995), (5, 56395196), (10, 28197598), (11, 25634180), (13, 21690460), (20, 14098799), (22, 12817090), (26, 10845230), (44, 6408545), (52, 5422615), (55, 5126836), (65, 4338092), (110, 2563418), (121, 2330380), (130, 2169046), (143, 1971860), (220, 1281709), (242, 1165190), (260, 1084523), (286, 985930), (484, 582595), (572, 492965), (605, 466076), (715, 394372), (1210, 233038), (1430, 197186), (1573, 179260), (2420, 116519), (2860, 98593), (3146, 89630), (6292, 44815), (7865, 35852), (8963, 31460), (15730, 17926)]