21532472

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{641}}^1$

素因数の和:696

約数の個数: 64

約数和(自身を含む): 48535200

約数和(自身を除く): 27002728

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 221, 247, 323, 442, 494, 641, 646, 884, 988, 1282, 1292, 1768, 1976, 2564, 2584, 4199, 5128, 8333, 8398, 10897, 12179, 16666, 16796, 21794, 24358, 33332, 33592, 43588, 48716, 66664, 87176, 97432, 141661, 158327, 207043, 283322, 316654, 414086, 566644, 633308, 828172, 1133288, 1266616, 1656344, 2691559, 5383118, 10766236, 21532472]

約数ペア:

[(1, 21532472), (2, 10766236), (4, 5383118), (8, 2691559), (13, 1656344), (17, 1266616), (19, 1133288), (26, 828172), (34, 633308), (38, 566644), (52, 414086), (68, 316654), (76, 283322), (104, 207043), (136, 158327), (152, 141661), (221, 97432), (247, 87176), (323, 66664), (442, 48716), (494, 43588), (641, 33592), (646, 33332), (884, 24358), (988, 21794), (1282, 16796), (1292, 16666), (1768, 12179), (1976, 10897), (2564, 8398), (2584, 8333), (4199, 5128)]