19816875

素因数分解:

$3^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{271}}^1$

素因数の和:310

約数の個数: 60

約数和(自身を含む): 38662624

約数和(自身を除く): 18845749

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 125, 195, 225, 271, 325, 375, 585, 625, 813, 975, 1125, 1355, 1625, 1875, 2439, 2925, 3523, 4065, 4875, 5625, 6775, 8125, 10569, 12195, 14625, 17615, 20325, 24375, 31707, 33875, 52845, 60975, 73125, 88075, 101625, 158535, 169375, 264225, 304875, 440375, 508125, 792675, 1321125, 1524375, 2201875, 3963375, 6605625, 19816875]

約数ペア:

[(1, 19816875), (3, 6605625), (5, 3963375), (9, 2201875), (13, 1524375), (15, 1321125), (25, 792675), (39, 508125), (45, 440375), (65, 304875), (75, 264225), (117, 169375), (125, 158535), (195, 101625), (225, 88075), (271, 73125), (325, 60975), (375, 52845), (585, 33875), (625, 31707), (813, 24375), (975, 20325), (1125, 17615), (1355, 14625), (1625, 12195), (1875, 10569), (2439, 8125), (2925, 6775), (3523, 5625), (4065, 4875)]