20921574232

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{479}}^1\times {\mathrm{3853}}^1$

素因数の和:4460

約数の個数: 64

約数和(自身を含む): 42733152000

約数和(自身を除く): 21811577768

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 109, 218, 436, 479, 872, 958, 1417, 1916, 2834, 3832, 3853, 5668, 6227, 7706, 11336, 12454, 15412, 24908, 30824, 49816, 50089, 52211, 100178, 104422, 200356, 208844, 400712, 417688, 419977, 678743, 839954, 1357486, 1679908, 1845587, 2714972, 3359816, 3691174, 5429944, 5459701, 7382348, 10919402, 14764696, 21838804, 23992631, 43677608, 47985262, 95970524, 191941048, 201168983, 402337966, 804675932, 1609351864, 2615196779, 5230393558, 10460787116, 20921574232]

約数ペア:

[(1, 20921574232), (2, 10460787116), (4, 5230393558), (8, 2615196779), (13, 1609351864), (26, 804675932), (52, 402337966), (104, 201168983), (109, 191941048), (218, 95970524), (436, 47985262), (479, 43677608), (872, 23992631), (958, 21838804), (1417, 14764696), (1916, 10919402), (2834, 7382348), (3832, 5459701), (3853, 5429944), (5668, 3691174), (6227, 3359816), (7706, 2714972), (11336, 1845587), (12454, 1679908), (15412, 1357486), (24908, 839954), (30824, 678743), (49816, 419977), (50089, 417688), (52211, 400712), (100178, 208844), (104422, 200356)]