81461816

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 163997640

約数和(自身を除く): 82535824

約数列:

[1, 2, 4, 8, 19, 38, 67, 76, 134, 152, 268, 361, 421, 536, 722, 842, 1273, 1444, 1684, 2546, 2888, 3368, 5092, 7999, 10184, 15998, 24187, 28207, 31996, 48374, 56414, 63992, 96748, 112828, 151981, 193496, 225656, 303962, 535933, 607924, 1071866, 1215848, 2143732, 4287464, 10182727, 20365454, 40730908, 81461816]

約数ペア:

[(1, 81461816), (2, 40730908), (4, 20365454), (8, 10182727), (19, 4287464), (38, 2143732), (67, 1215848), (76, 1071866), (134, 607924), (152, 535933), (268, 303962), (361, 225656), (421, 193496), (536, 151981), (722, 112828), (842, 96748), (1273, 63992), (1444, 56414), (1684, 48374), (2546, 31996), (2888, 28207), (3368, 24187), (5092, 15998), (7999, 10184)]