19697925

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 35622720

約数和(自身を除く): 15924795

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 89, 195, 227, 267, 325, 445, 681, 975, 1135, 1157, 1335, 2225, 2951, 3405, 3471, 5675, 5785, 6675, 8853, 14755, 17025, 17355, 20203, 28925, 44265, 60609, 73775, 86775, 101015, 221325, 262639, 303045, 505075, 787917, 1313195, 1515225, 3939585, 6565975, 19697925]

約数ペア:

[(1, 19697925), (3, 6565975), (5, 3939585), (13, 1515225), (15, 1313195), (25, 787917), (39, 505075), (65, 303045), (75, 262639), (89, 221325), (195, 101015), (227, 86775), (267, 73775), (325, 60609), (445, 44265), (681, 28925), (975, 20203), (1135, 17355), (1157, 17025), (1335, 14755), (2225, 8853), (2951, 6675), (3405, 5785), (3471, 5675)]