163920625

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{211}}^1$

素因数の和:355

約数の個数: 40

約数和(自身を含む): 226502496

約数和(自身を除く): 62581871

約数列:

[1, 5, 11, 25, 55, 113, 125, 211, 275, 565, 625, 1055, 1243, 1375, 2321, 2825, 5275, 6215, 6875, 11605, 14125, 23843, 26375, 31075, 58025, 70625, 119215, 131875, 155375, 262273, 290125, 596075, 776875, 1311365, 1450625, 2980375, 6556825, 14901875, 32784125, 163920625]

約数ペア:

[(1, 163920625), (5, 32784125), (11, 14901875), (25, 6556825), (55, 2980375), (113, 1450625), (125, 1311365), (211, 776875), (275, 596075), (565, 290125), (625, 262273), (1055, 155375), (1243, 131875), (1375, 119215), (2321, 70625), (2825, 58025), (5275, 31075), (6215, 26375), (6875, 23843), (11605, 14125)]