20454764940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{269923}}^1$

素因数の和:270359

約数の個数: 72

約数和(自身を含む): 62193728688

約数和(自身を除く): 41738963748

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 421, 842, 1263, 1684, 2105, 2526, 3789, 4210, 5052, 6315, 7578, 8420, 12630, 15156, 18945, 25260, 37890, 75780, 269923, 539846, 809769, 1079692, 1349615, 1619538, 2429307, 2699230, 3239076, 4048845, 4858614, 5398460, 8097690, 9717228, 12146535, 16195380, 24293070, 48586140, 113637583, 227275166, 340912749, 454550332, 568187915, 681825498, 1022738247, 1136375830, 1363650996, 1704563745, 2045476494, 2272751660, 3409127490, 4090952988, 5113691235, 6818254980, 10227382470, 20454764940]

約数ペア:

[(1, 20454764940), (2, 10227382470), (3, 6818254980), (4, 5113691235), (5, 4090952988), (6, 3409127490), (9, 2272751660), (10, 2045476494), (12, 1704563745), (15, 1363650996), (18, 1136375830), (20, 1022738247), (30, 681825498), (36, 568187915), (45, 454550332), (60, 340912749), (90, 227275166), (180, 113637583), (421, 48586140), (842, 24293070), (1263, 16195380), (1684, 12146535), (2105, 9717228), (2526, 8097690), (3789, 5398460), (4210, 4858614), (5052, 4048845), (6315, 3239076), (7578, 2699230), (8420, 2429307), (12630, 1619538), (15156, 1349615), (18945, 1079692), (25260, 809769), (37890, 539846), (75780, 269923)]