19840700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1061}}^1$

素因数の和:1103

約数の個数: 72

約数和(自身を含む): 49778064

約数和(自身を除く): 29937364

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 34, 44, 50, 55, 68, 85, 100, 110, 170, 187, 220, 275, 340, 374, 425, 550, 748, 850, 935, 1061, 1100, 1700, 1870, 2122, 3740, 4244, 4675, 5305, 9350, 10610, 11671, 18037, 18700, 21220, 23342, 26525, 36074, 46684, 53050, 58355, 72148, 90185, 106100, 116710, 180370, 198407, 233420, 291775, 360740, 396814, 450925, 583550, 793628, 901850, 992035, 1167100, 1803700, 1984070, 3968140, 4960175, 9920350, 19840700]

約数ペア:

[(1, 19840700), (2, 9920350), (4, 4960175), (5, 3968140), (10, 1984070), (11, 1803700), (17, 1167100), (20, 992035), (22, 901850), (25, 793628), (34, 583550), (44, 450925), (50, 396814), (55, 360740), (68, 291775), (85, 233420), (100, 198407), (110, 180370), (170, 116710), (187, 106100), (220, 90185), (275, 72148), (340, 58355), (374, 53050), (425, 46684), (550, 36074), (748, 26525), (850, 23342), (935, 21220), (1061, 18700), (1100, 18037), (1700, 11671), (1870, 10610), (2122, 9350), (3740, 5305), (4244, 4675)]