21722925

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{257}}^1$

素因数の和:307

約数の個数: 72

約数和(自身を含む): 43765056

約数和(自身を除く): 22042131

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 49, 69, 75, 105, 115, 147, 161, 175, 245, 257, 345, 483, 525, 575, 735, 771, 805, 1127, 1225, 1285, 1725, 1799, 2415, 3381, 3675, 3855, 4025, 5397, 5635, 5911, 6425, 8995, 12075, 12593, 16905, 17733, 19275, 26985, 28175, 29555, 37779, 41377, 44975, 62965, 84525, 88665, 124131, 134925, 147775, 188895, 206885, 289639, 314825, 443325, 620655, 868917, 944475, 1034425, 1448195, 3103275, 4344585, 7240975, 21722925]

約数ペア:

[(1, 21722925), (3, 7240975), (5, 4344585), (7, 3103275), (15, 1448195), (21, 1034425), (23, 944475), (25, 868917), (35, 620655), (49, 443325), (69, 314825), (75, 289639), (105, 206885), (115, 188895), (147, 147775), (161, 134925), (175, 124131), (245, 88665), (257, 84525), (345, 62965), (483, 44975), (525, 41377), (575, 37779), (735, 29555), (771, 28175), (805, 26985), (1127, 19275), (1225, 17733), (1285, 16905), (1725, 12593), (1799, 12075), (2415, 8995), (3381, 6425), (3675, 5911), (3855, 5635), (4025, 5397)]