20457580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{311}}^1$

素因数の和:367

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 32377748

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 23, 26, 44, 46, 52, 55, 65, 92, 110, 115, 130, 143, 220, 230, 253, 260, 286, 299, 311, 460, 506, 572, 598, 622, 715, 1012, 1196, 1244, 1265, 1430, 1495, 1555, 2530, 2860, 2990, 3110, 3289, 3421, 4043, 5060, 5980, 6220, 6578, 6842, 7153, 8086, 13156, 13684, 14306, 16172, 16445, 17105, 20215, 28612, 32890, 34210, 35765, 40430, 44473, 65780, 68420, 71530, 78683, 80860, 88946, 92989, 143060, 157366, 177892, 185978, 222365, 314732, 371956, 393415, 444730, 464945, 786830, 889460, 929890, 1022879, 1573660, 1859780, 2045758, 4091516, 5114395, 10228790, 20457580]

約数ペア:

[(1, 20457580), (2, 10228790), (4, 5114395), (5, 4091516), (10, 2045758), (11, 1859780), (13, 1573660), (20, 1022879), (22, 929890), (23, 889460), (26, 786830), (44, 464945), (46, 444730), (52, 393415), (55, 371956), (65, 314732), (92, 222365), (110, 185978), (115, 177892), (130, 157366), (143, 143060), (220, 92989), (230, 88946), (253, 80860), (260, 78683), (286, 71530), (299, 68420), (311, 65780), (460, 44473), (506, 40430), (572, 35765), (598, 34210), (622, 32890), (715, 28612), (1012, 20215), (1196, 17105), (1244, 16445), (1265, 16172), (1430, 14306), (1495, 13684), (1555, 13156), (2530, 8086), (2860, 7153), (2990, 6842), (3110, 6578), (3289, 6220), (3421, 5980), (4043, 5060)]