201419920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{661}}^1$

素因数の和:980

約数の個数: 80

約数和(自身を含む): 506811312

約数和(自身を除く): 305391392

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 293, 520, 586, 661, 1040, 1172, 1322, 1465, 2344, 2644, 2930, 3305, 3809, 4688, 5288, 5860, 6610, 7618, 8593, 10576, 11720, 13220, 15236, 17186, 19045, 23440, 26440, 30472, 34372, 38090, 42965, 52880, 60944, 68744, 76180, 85930, 137488, 152360, 171860, 193673, 304720, 343720, 387346, 687440, 774692, 968365, 1549384, 1936730, 2517749, 3098768, 3873460, 5035498, 7746920, 10070996, 12588745, 15493840, 20141992, 25177490, 40283984, 50354980, 100709960, 201419920]

約数ペア:

[(1, 201419920), (2, 100709960), (4, 50354980), (5, 40283984), (8, 25177490), (10, 20141992), (13, 15493840), (16, 12588745), (20, 10070996), (26, 7746920), (40, 5035498), (52, 3873460), (65, 3098768), (80, 2517749), (104, 1936730), (130, 1549384), (208, 968365), (260, 774692), (293, 687440), (520, 387346), (586, 343720), (661, 304720), (1040, 193673), (1172, 171860), (1322, 152360), (1465, 137488), (2344, 85930), (2644, 76180), (2930, 68744), (3305, 60944), (3809, 52880), (4688, 42965), (5288, 38090), (5860, 34372), (6610, 30472), (7618, 26440), (8593, 23440), (10576, 19045), (11720, 17186), (13220, 15236)]