20897359730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{28537}}^1$

素因数の和:28731

約数の個数: 64

約数和(自身を含む): 41768673408

約数和(自身を除く): 20871313678

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 131, 215, 262, 430, 559, 655, 1118, 1310, 1703, 2795, 3406, 5590, 5633, 8515, 11266, 17030, 28165, 28537, 56330, 57074, 73229, 142685, 146458, 285370, 366145, 370981, 732290, 741962, 1227091, 1854905, 2454182, 3709810, 3738347, 6135455, 7476694, 12270910, 15952183, 18691735, 31904366, 37383470, 48598511, 79760915, 97197022, 159521830, 160748921, 242992555, 321497842, 485985110, 803744605, 1607489210, 2089735973, 4179471946, 10448679865, 20897359730]

約数ペア:

[(1, 20897359730), (2, 10448679865), (5, 4179471946), (10, 2089735973), (13, 1607489210), (26, 803744605), (43, 485985110), (65, 321497842), (86, 242992555), (130, 160748921), (131, 159521830), (215, 97197022), (262, 79760915), (430, 48598511), (559, 37383470), (655, 31904366), (1118, 18691735), (1310, 15952183), (1703, 12270910), (2795, 7476694), (3406, 6135455), (5590, 3738347), (5633, 3709810), (8515, 2454182), (11266, 1854905), (17030, 1227091), (28165, 741962), (28537, 732290), (56330, 370981), (57074, 366145), (73229, 285370), (142685, 146458)]