20802019940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{487}}^1\times {\mathrm{4007}}^1$

素因数の和:4557

約数の個数: 96

約数和(自身を含む): 48303005184

約数和(自身を除く): 27500985244

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 164, 205, 260, 410, 487, 533, 820, 974, 1066, 1948, 2132, 2435, 2665, 4007, 4870, 5330, 6331, 8014, 9740, 10660, 12662, 16028, 19967, 20035, 25324, 31655, 39934, 40070, 52091, 63310, 79868, 80140, 99835, 104182, 126620, 164287, 199670, 208364, 259571, 260455, 328574, 399340, 519142, 520910, 657148, 821435, 1038284, 1041820, 1297855, 1642870, 1951409, 2135731, 2595710, 3285740, 3902818, 4271462, 5191420, 7805636, 8542924, 9757045, 10678655, 19514090, 21357310, 25368317, 39028180, 42714620, 50736634, 80007769, 101473268, 126841585, 160015538, 253683170, 320031076, 400038845, 507366340, 800077690, 1040100997, 1600155380, 2080201994, 4160403988, 5200504985, 10401009970, 20802019940]

約数ペア:

[(1, 20802019940), (2, 10401009970), (4, 5200504985), (5, 4160403988), (10, 2080201994), (13, 1600155380), (20, 1040100997), (26, 800077690), (41, 507366340), (52, 400038845), (65, 320031076), (82, 253683170), (130, 160015538), (164, 126841585), (205, 101473268), (260, 80007769), (410, 50736634), (487, 42714620), (533, 39028180), (820, 25368317), (974, 21357310), (1066, 19514090), (1948, 10678655), (2132, 9757045), (2435, 8542924), (2665, 7805636), (4007, 5191420), (4870, 4271462), (5330, 3902818), (6331, 3285740), (8014, 2595710), (9740, 2135731), (10660, 1951409), (12662, 1642870), (16028, 1297855), (19967, 1041820), (20035, 1038284), (25324, 821435), (31655, 657148), (39934, 520910), (40070, 519142), (52091, 399340), (63310, 328574), (79868, 260455), (80140, 259571), (99835, 208364), (104182, 199670), (126620, 164287)]