28753660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 67144896

約数和(自身を除く): 38391236

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 169, 181, 188, 235, 260, 338, 362, 470, 611, 676, 724, 845, 905, 940, 1222, 1690, 1810, 2353, 2444, 3055, 3380, 3620, 4706, 6110, 7943, 8507, 9412, 11765, 12220, 15886, 17014, 23530, 30589, 31772, 34028, 39715, 42535, 47060, 61178, 79430, 85070, 110591, 122356, 152945, 158860, 170140, 221182, 305890, 442364, 552955, 611780, 1105910, 1437683, 2211820, 2875366, 5750732, 7188415, 14376830, 28753660]

約数ペア:

[(1, 28753660), (2, 14376830), (4, 7188415), (5, 5750732), (10, 2875366), (13, 2211820), (20, 1437683), (26, 1105910), (47, 611780), (52, 552955), (65, 442364), (94, 305890), (130, 221182), (169, 170140), (181, 158860), (188, 152945), (235, 122356), (260, 110591), (338, 85070), (362, 79430), (470, 61178), (611, 47060), (676, 42535), (724, 39715), (845, 34028), (905, 31772), (940, 30589), (1222, 23530), (1690, 17014), (1810, 15886), (2353, 12220), (2444, 11765), (3055, 9412), (3380, 8507), (3620, 7943), (4706, 6110)]