20147019280

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1\times {\mathrm{32491}}^1$

素因数の和:32864

約数の個数: 80

約数和(自身を含む): 49024969344

約数和(自身を除く): 28877950064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 337, 368, 460, 674, 920, 1348, 1685, 1840, 2696, 3370, 5392, 6740, 7751, 13480, 15502, 26960, 31004, 32491, 38755, 62008, 64982, 77510, 124016, 129964, 155020, 162455, 259928, 310040, 324910, 519856, 620080, 649820, 747293, 1299640, 1494586, 2599280, 2989172, 3736465, 5978344, 7472930, 10949467, 11956688, 14945860, 21898934, 29891720, 43797868, 54747335, 59783440, 87595736, 109494670, 175191472, 218989340, 251837741, 437978680, 503675482, 875957360, 1007350964, 1259188705, 2014701928, 2518377410, 4029403856, 5036754820, 10073509640, 20147019280]

約数ペア:

[(1, 20147019280), (2, 10073509640), (4, 5036754820), (5, 4029403856), (8, 2518377410), (10, 2014701928), (16, 1259188705), (20, 1007350964), (23, 875957360), (40, 503675482), (46, 437978680), (80, 251837741), (92, 218989340), (115, 175191472), (184, 109494670), (230, 87595736), (337, 59783440), (368, 54747335), (460, 43797868), (674, 29891720), (920, 21898934), (1348, 14945860), (1685, 11956688), (1840, 10949467), (2696, 7472930), (3370, 5978344), (5392, 3736465), (6740, 2989172), (7751, 2599280), (13480, 1494586), (15502, 1299640), (26960, 747293), (31004, 649820), (32491, 620080), (38755, 519856), (62008, 324910), (64982, 310040), (77510, 259928), (124016, 162455), (129964, 155020)]