20385778820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{13327}}^1$

素因数の和:13773

約数の個数: 96

約数和(自身を含む): 49573762560

約数和(自身を除く): 29187983740

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 409, 748, 818, 935, 1636, 1870, 2045, 3740, 4090, 4499, 6953, 8180, 8998, 13327, 13906, 17996, 22495, 26654, 27812, 34765, 44990, 53308, 66635, 69530, 76483, 89980, 133270, 139060, 146597, 152966, 226559, 266540, 293194, 305932, 382415, 453118, 586388, 732985, 764830, 906236, 1132795, 1465970, 1529660, 2265590, 2492149, 2931940, 4531180, 4984298, 5450743, 9968596, 10901486, 12460745, 21802972, 24921490, 27253715, 49842980, 54507430, 59958173, 92662631, 109014860, 119916346, 185325262, 239832692, 299790865, 370650524, 463313155, 599581730, 926626310, 1019288941, 1199163460, 1853252620, 2038577882, 4077155764, 5096444705, 10192889410, 20385778820]

約数ペア:

[(1, 20385778820), (2, 10192889410), (4, 5096444705), (5, 4077155764), (10, 2038577882), (11, 1853252620), (17, 1199163460), (20, 1019288941), (22, 926626310), (34, 599581730), (44, 463313155), (55, 370650524), (68, 299790865), (85, 239832692), (110, 185325262), (170, 119916346), (187, 109014860), (220, 92662631), (340, 59958173), (374, 54507430), (409, 49842980), (748, 27253715), (818, 24921490), (935, 21802972), (1636, 12460745), (1870, 10901486), (2045, 9968596), (3740, 5450743), (4090, 4984298), (4499, 4531180), (6953, 2931940), (8180, 2492149), (8998, 2265590), (13327, 1529660), (13906, 1465970), (17996, 1132795), (22495, 906236), (26654, 764830), (27812, 732985), (34765, 586388), (44990, 453118), (53308, 382415), (66635, 305932), (69530, 293194), (76483, 266540), (89980, 226559), (133270, 152966), (139060, 146597)]