21653625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 42112512

約数和(自身を除く): 20458887

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 73, 75, 105, 113, 125, 175, 219, 339, 365, 375, 511, 525, 565, 791, 875, 1095, 1533, 1695, 1825, 2373, 2555, 2625, 2825, 3955, 5475, 7665, 8249, 8475, 9125, 11865, 12775, 14125, 19775, 24747, 27375, 38325, 41245, 42375, 57743, 59325, 63875, 98875, 123735, 173229, 191625, 206225, 288715, 296625, 618675, 866145, 1031125, 1443575, 3093375, 4330725, 7217875, 21653625]

約数ペア:

[(1, 21653625), (3, 7217875), (5, 4330725), (7, 3093375), (15, 1443575), (21, 1031125), (25, 866145), (35, 618675), (73, 296625), (75, 288715), (105, 206225), (113, 191625), (125, 173229), (175, 123735), (219, 98875), (339, 63875), (365, 59325), (375, 57743), (511, 42375), (525, 41245), (565, 38325), (791, 27375), (875, 24747), (1095, 19775), (1533, 14125), (1695, 12775), (1825, 11865), (2373, 9125), (2555, 8475), (2625, 8249), (2825, 7665), (3955, 5475)]