161878340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{1019}}^1$

素因数の和:1101

約数の個数: 72

約数和(自身を含む): 376306560

約数和(自身を除く): 214428220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 169, 188, 235, 260, 338, 470, 611, 676, 845, 940, 1019, 1222, 1690, 2038, 2444, 3055, 3380, 4076, 5095, 6110, 7943, 10190, 12220, 13247, 15886, 20380, 26494, 31772, 39715, 47893, 52988, 66235, 79430, 95786, 132470, 158860, 172211, 191572, 239465, 264940, 344422, 478930, 622609, 688844, 861055, 957860, 1245218, 1722110, 2490436, 3113045, 3444220, 6226090, 8093917, 12452180, 16187834, 32375668, 40469585, 80939170, 161878340]

約数ペア:

[(1, 161878340), (2, 80939170), (4, 40469585), (5, 32375668), (10, 16187834), (13, 12452180), (20, 8093917), (26, 6226090), (47, 3444220), (52, 3113045), (65, 2490436), (94, 1722110), (130, 1245218), (169, 957860), (188, 861055), (235, 688844), (260, 622609), (338, 478930), (470, 344422), (611, 264940), (676, 239465), (845, 191572), (940, 172211), (1019, 158860), (1222, 132470), (1690, 95786), (2038, 79430), (2444, 66235), (3055, 52988), (3380, 47893), (4076, 39715), (5095, 31772), (6110, 26494), (7943, 20380), (10190, 15886), (12220, 13247)]