21039940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{863}}^1$

素因数の和:948

約数の個数: 48

約数和(自身を含む): 47029248

約数和(自身を除く): 25989308

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 53, 92, 106, 115, 212, 230, 265, 460, 530, 863, 1060, 1219, 1726, 2438, 3452, 4315, 4876, 6095, 8630, 12190, 17260, 19849, 24380, 39698, 45739, 79396, 91478, 99245, 182956, 198490, 228695, 396980, 457390, 914780, 1051997, 2103994, 4207988, 5259985, 10519970, 21039940]

約数ペア:

[(1, 21039940), (2, 10519970), (4, 5259985), (5, 4207988), (10, 2103994), (20, 1051997), (23, 914780), (46, 457390), (53, 396980), (92, 228695), (106, 198490), (115, 182956), (212, 99245), (230, 91478), (265, 79396), (460, 45739), (530, 39698), (863, 24380), (1060, 19849), (1219, 17260), (1726, 12190), (2438, 8630), (3452, 6095), (4315, 4876)]