28490940

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:473

約数の個数: 120

約数和(自身を含む): 91679280

約数和(自身を除く): 63188340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 43, 45, 54, 60, 81, 86, 90, 108, 129, 135, 162, 172, 180, 215, 258, 270, 324, 387, 405, 409, 430, 516, 540, 645, 774, 810, 818, 860, 1161, 1227, 1290, 1548, 1620, 1636, 1935, 2045, 2322, 2454, 2580, 3483, 3681, 3870, 4090, 4644, 4908, 5805, 6135, 6966, 7362, 7740, 8180, 11043, 11610, 12270, 13932, 14724, 17415, 17587, 18405, 22086, 23220, 24540, 33129, 34830, 35174, 36810, 44172, 52761, 55215, 66258, 69660, 70348, 73620, 87935, 105522, 110430, 132516, 158283, 165645, 175870, 211044, 220860, 263805, 316566, 331290, 351740, 474849, 527610, 633132, 662580, 791415, 949698, 1055220, 1424547, 1582830, 1899396, 2374245, 2849094, 3165660, 4748490, 5698188, 7122735, 9496980, 14245470, 28490940]

約数ペア:

[(1, 28490940), (2, 14245470), (3, 9496980), (4, 7122735), (5, 5698188), (6, 4748490), (9, 3165660), (10, 2849094), (12, 2374245), (15, 1899396), (18, 1582830), (20, 1424547), (27, 1055220), (30, 949698), (36, 791415), (43, 662580), (45, 633132), (54, 527610), (60, 474849), (81, 351740), (86, 331290), (90, 316566), (108, 263805), (129, 220860), (135, 211044), (162, 175870), (172, 165645), (180, 158283), (215, 132516), (258, 110430), (270, 105522), (324, 87935), (387, 73620), (405, 70348), (409, 69660), (430, 66258), (516, 55215), (540, 52761), (645, 44172), (774, 36810), (810, 35174), (818, 34830), (860, 33129), (1161, 24540), (1227, 23220), (1290, 22086), (1548, 18405), (1620, 17587), (1636, 17415), (1935, 14724), (2045, 13932), (2322, 12270), (2454, 11610), (2580, 11043), (3483, 8180), (3681, 7740), (3870, 7362), (4090, 6966), (4644, 6135), (4908, 5805)]