28351980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5081}}^1$

素因数の和:5127

約数の個数: 72

約数和(自身を含む): 88792704

約数和(自身を除く): 60440724

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 5081, 5580, 10162, 15243, 20324, 25405, 30486, 45729, 50810, 60972, 76215, 91458, 101620, 152430, 157511, 182916, 228645, 304860, 315022, 457290, 472533, 630044, 787555, 914580, 945066, 1417599, 1575110, 1890132, 2362665, 2835198, 3150220, 4725330, 5670396, 7087995, 9450660, 14175990, 28351980]

約数ペア:

[(1, 28351980), (2, 14175990), (3, 9450660), (4, 7087995), (5, 5670396), (6, 4725330), (9, 3150220), (10, 2835198), (12, 2362665), (15, 1890132), (18, 1575110), (20, 1417599), (30, 945066), (31, 914580), (36, 787555), (45, 630044), (60, 472533), (62, 457290), (90, 315022), (93, 304860), (124, 228645), (155, 182916), (180, 157511), (186, 152430), (279, 101620), (310, 91458), (372, 76215), (465, 60972), (558, 50810), (620, 45729), (930, 30486), (1116, 25405), (1395, 20324), (1860, 15243), (2790, 10162), (5081, 5580)]