21959925

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 39664128

約数和(自身を除く): 17704203

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 101, 195, 223, 303, 325, 505, 669, 975, 1115, 1313, 1515, 2525, 2899, 3345, 3939, 5575, 6565, 7575, 8697, 14495, 16725, 19695, 22523, 32825, 43485, 67569, 72475, 98475, 112615, 217425, 292799, 337845, 563075, 878397, 1463995, 1689225, 4391985, 7319975, 21959925]

約数ペア:

[(1, 21959925), (3, 7319975), (5, 4391985), (13, 1689225), (15, 1463995), (25, 878397), (39, 563075), (65, 337845), (75, 292799), (101, 217425), (195, 112615), (223, 98475), (303, 72475), (325, 67569), (505, 43485), (669, 32825), (975, 22523), (1115, 19695), (1313, 16725), (1515, 14495), (2525, 8697), (2899, 7575), (3345, 6565), (3939, 5575)]