20015930

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:255

約数の個数: 64

約数和(自身を含む): 42318720

約数和(自身を除く): 22302790

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 61, 95, 110, 122, 157, 190, 209, 305, 314, 418, 610, 671, 785, 1045, 1159, 1342, 1570, 1727, 2090, 2318, 2983, 3355, 3454, 5795, 5966, 6710, 8635, 9577, 11590, 12749, 14915, 17270, 19154, 25498, 29830, 32813, 47885, 63745, 65626, 95770, 105347, 127490, 164065, 181963, 210694, 328130, 363926, 526735, 909815, 1053470, 1819630, 2001593, 4003186, 10007965, 20015930]

約数ペア:

[(1, 20015930), (2, 10007965), (5, 4003186), (10, 2001593), (11, 1819630), (19, 1053470), (22, 909815), (38, 526735), (55, 363926), (61, 328130), (95, 210694), (110, 181963), (122, 164065), (157, 127490), (190, 105347), (209, 95770), (305, 65626), (314, 63745), (418, 47885), (610, 32813), (671, 29830), (785, 25498), (1045, 19154), (1159, 17270), (1342, 14915), (1570, 12749), (1727, 11590), (2090, 9577), (2318, 8635), (2983, 6710), (3355, 5966), (3454, 5795)]