18643625

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1$

素因数の和:195

約数の個数: 64

約数和(自身を含む): 31449600

約数和(自身を除く): 12805975

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 125, 143, 149, 175, 275, 325, 385, 455, 715, 745, 875, 1001, 1043, 1375, 1625, 1639, 1925, 1937, 2275, 3575, 3725, 5005, 5215, 8195, 9625, 9685, 11375, 11473, 13559, 17875, 18625, 21307, 25025, 26075, 40975, 48425, 57365, 67795, 106535, 125125, 130375, 149149, 204875, 242125, 286825, 338975, 532675, 745745, 1434125, 1694875, 2663375, 3728725, 18643625]

約数ペア:

[(1, 18643625), (5, 3728725), (7, 2663375), (11, 1694875), (13, 1434125), (25, 745745), (35, 532675), (55, 338975), (65, 286825), (77, 242125), (91, 204875), (125, 149149), (143, 130375), (149, 125125), (175, 106535), (275, 67795), (325, 57365), (385, 48425), (455, 40975), (715, 26075), (745, 25025), (875, 21307), (1001, 18625), (1043, 17875), (1375, 13559), (1625, 11473), (1639, 11375), (1925, 9685), (1937, 9625), (2275, 8195), (3575, 5215), (3725, 5005)]