20809901240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2213}}^1\times {\mathrm{12373}}^1$

素因数の和:14616

約数の個数: 64

約数和(自身を含む): 49312864800

約数和(自身を除く): 28502963560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 2213, 4426, 8852, 11065, 12373, 17704, 22130, 24746, 42047, 44260, 49492, 61865, 84094, 88520, 98984, 123730, 168188, 210235, 235087, 247460, 336376, 420470, 470174, 494920, 840940, 940348, 1175435, 1681880, 1880696, 2350870, 4701740, 9403480, 27381449, 54762898, 109525796, 136907245, 219051592, 273814490, 520247531, 547628980, 1040495062, 1095257960, 2080990124, 2601237655, 4161980248, 5202475310, 10404950620, 20809901240]

約数ペア:

[(1, 20809901240), (2, 10404950620), (4, 5202475310), (5, 4161980248), (8, 2601237655), (10, 2080990124), (19, 1095257960), (20, 1040495062), (38, 547628980), (40, 520247531), (76, 273814490), (95, 219051592), (152, 136907245), (190, 109525796), (380, 54762898), (760, 27381449), (2213, 9403480), (4426, 4701740), (8852, 2350870), (11065, 1880696), (12373, 1681880), (17704, 1175435), (22130, 940348), (24746, 840940), (42047, 494920), (44260, 470174), (49492, 420470), (61865, 336376), (84094, 247460), (88520, 235087), (98984, 210235), (123730, 168188)]