20725020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1187}}^1$

素因数の和:1299

約数の個数: 72

約数和(自身を含む): 63567504

約数和(自身を除く): 42842484

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 97, 180, 194, 291, 388, 485, 582, 873, 970, 1164, 1187, 1455, 1746, 1940, 2374, 2910, 3492, 3561, 4365, 4748, 5820, 5935, 7122, 8730, 10683, 11870, 14244, 17460, 17805, 21366, 23740, 35610, 42732, 53415, 71220, 106830, 115139, 213660, 230278, 345417, 460556, 575695, 690834, 1036251, 1151390, 1381668, 1727085, 2072502, 2302780, 3454170, 4145004, 5181255, 6908340, 10362510, 20725020]

約数ペア:

[(1, 20725020), (2, 10362510), (3, 6908340), (4, 5181255), (5, 4145004), (6, 3454170), (9, 2302780), (10, 2072502), (12, 1727085), (15, 1381668), (18, 1151390), (20, 1036251), (30, 690834), (36, 575695), (45, 460556), (60, 345417), (90, 230278), (97, 213660), (180, 115139), (194, 106830), (291, 71220), (388, 53415), (485, 42732), (582, 35610), (873, 23740), (970, 21366), (1164, 17805), (1187, 17460), (1455, 14244), (1746, 11870), (1940, 10683), (2374, 8730), (2910, 7122), (3492, 5935), (3561, 5820), (4365, 4748)]