21227275

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1$

素因数の和:148

約数の個数: 48

約数和(自身を含む): 30355200

約数和(自身を除く): 9127925

約数列:

[1, 5, 19, 23, 25, 29, 67, 95, 115, 145, 335, 437, 475, 551, 575, 667, 725, 1273, 1541, 1675, 1943, 2185, 2755, 3335, 6365, 7705, 9715, 10925, 12673, 13775, 16675, 29279, 31825, 36917, 38525, 44689, 48575, 63365, 146395, 184585, 223445, 316825, 731975, 849091, 922925, 1117225, 4245455, 21227275]

約数ペア:

[(1, 21227275), (5, 4245455), (19, 1117225), (23, 922925), (25, 849091), (29, 731975), (67, 316825), (95, 223445), (115, 184585), (145, 146395), (335, 63365), (437, 48575), (475, 44689), (551, 38525), (575, 36917), (667, 31825), (725, 29279), (1273, 16675), (1541, 13775), (1675, 12673), (1943, 10925), (2185, 9715), (2755, 7705), (3335, 6365)]