21376875

素因数分解:

$3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{877}}^1$

素因数の和:913

約数の個数: 40

約数和(自身を含む): 38400208

約数和(自身を除く): 17023333

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 625, 877, 975, 1625, 1875, 2631, 4385, 4875, 8125, 11401, 13155, 21925, 24375, 34203, 57005, 65775, 109625, 171015, 285025, 328875, 548125, 855075, 1425125, 1644375, 4275375, 7125625, 21376875]

約数ペア:

[(1, 21376875), (3, 7125625), (5, 4275375), (13, 1644375), (15, 1425125), (25, 855075), (39, 548125), (65, 328875), (75, 285025), (125, 171015), (195, 109625), (325, 65775), (375, 57005), (625, 34203), (877, 24375), (975, 21925), (1625, 13155), (1875, 11401), (2631, 8125), (4385, 4875)]