161749660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:611

約数の個数: 72

約数和(自身を含む): 367533936

約数和(自身を除く): 205784276

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 361, 380, 430, 521, 722, 817, 860, 1042, 1444, 1634, 1805, 2084, 2605, 3268, 3610, 4085, 5210, 7220, 8170, 9899, 10420, 15523, 16340, 19798, 22403, 31046, 39596, 44806, 49495, 62092, 77615, 89612, 98990, 112015, 155230, 188081, 197980, 224030, 310460, 376162, 425657, 448060, 752324, 851314, 940405, 1702628, 1880810, 2128285, 3761620, 4256570, 8087483, 8513140, 16174966, 32349932, 40437415, 80874830, 161749660]

約数ペア:

[(1, 161749660), (2, 80874830), (4, 40437415), (5, 32349932), (10, 16174966), (19, 8513140), (20, 8087483), (38, 4256570), (43, 3761620), (76, 2128285), (86, 1880810), (95, 1702628), (172, 940405), (190, 851314), (215, 752324), (361, 448060), (380, 425657), (430, 376162), (521, 310460), (722, 224030), (817, 197980), (860, 188081), (1042, 155230), (1444, 112015), (1634, 98990), (1805, 89612), (2084, 77615), (2605, 62092), (3268, 49495), (3610, 44806), (4085, 39596), (5210, 31046), (7220, 22403), (8170, 19798), (9899, 16340), (10420, 15523)]