217989975

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{2579}}^1$

素因数の和:2629

約数の個数: 72

約数和(自身を含む): 437650560

約数和(自身を除く): 219660585

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 49, 69, 75, 105, 115, 147, 161, 175, 245, 345, 483, 525, 575, 735, 805, 1127, 1225, 1725, 2415, 2579, 3381, 3675, 4025, 5635, 7737, 12075, 12895, 16905, 18053, 28175, 38685, 54159, 59317, 64475, 84525, 90265, 126371, 177951, 193425, 270795, 296585, 379113, 415219, 451325, 631855, 889755, 1245657, 1353975, 1482925, 1895565, 2076095, 2906533, 3159275, 4448775, 6228285, 8719599, 9477825, 10380475, 14532665, 31141425, 43597995, 72663325, 217989975]

約数ペア:

[(1, 217989975), (3, 72663325), (5, 43597995), (7, 31141425), (15, 14532665), (21, 10380475), (23, 9477825), (25, 8719599), (35, 6228285), (49, 4448775), (69, 3159275), (75, 2906533), (105, 2076095), (115, 1895565), (147, 1482925), (161, 1353975), (175, 1245657), (245, 889755), (345, 631855), (483, 451325), (525, 415219), (575, 379113), (735, 296585), (805, 270795), (1127, 193425), (1225, 177951), (1725, 126371), (2415, 90265), (2579, 84525), (3381, 64475), (3675, 59317), (4025, 54159), (5635, 38685), (7737, 28175), (12075, 18053), (12895, 16905)]