31218590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{197}}^1$

素因数の和:293

約数の個数: 64

約数和(自身を含む): 64665216

約数和(自身を除く): 33446626

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 53, 65, 106, 115, 130, 197, 230, 265, 299, 394, 530, 598, 689, 985, 1219, 1378, 1495, 1970, 2438, 2561, 2990, 3445, 4531, 5122, 6095, 6890, 9062, 10441, 12190, 12805, 15847, 20882, 22655, 25610, 31694, 45310, 52205, 58903, 79235, 104410, 117806, 135733, 158470, 240143, 271466, 294515, 480286, 589030, 678665, 1200715, 1357330, 2401430, 3121859, 6243718, 15609295, 31218590]

約数ペア:

[(1, 31218590), (2, 15609295), (5, 6243718), (10, 3121859), (13, 2401430), (23, 1357330), (26, 1200715), (46, 678665), (53, 589030), (65, 480286), (106, 294515), (115, 271466), (130, 240143), (197, 158470), (230, 135733), (265, 117806), (299, 104410), (394, 79235), (530, 58903), (598, 52205), (689, 45310), (985, 31694), (1219, 25610), (1378, 22655), (1495, 20882), (1970, 15847), (2438, 12805), (2561, 12190), (2990, 10441), (3445, 9062), (4531, 6890), (5122, 6095)]