78699980

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1\times {\mathrm{359}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 168920640

約数和(自身を除く): 90220660

約数列:

[1, 2, 4, 5, 10, 20, 97, 113, 194, 226, 359, 388, 452, 485, 565, 718, 970, 1130, 1436, 1795, 1940, 2260, 3590, 7180, 10961, 21922, 34823, 40567, 43844, 54805, 69646, 81134, 109610, 139292, 162268, 174115, 202835, 219220, 348230, 405670, 696460, 811340, 3934999, 7869998, 15739996, 19674995, 39349990, 78699980]

約数ペア:

[(1, 78699980), (2, 39349990), (4, 19674995), (5, 15739996), (10, 7869998), (20, 3934999), (97, 811340), (113, 696460), (194, 405670), (226, 348230), (359, 219220), (388, 202835), (452, 174115), (485, 162268), (565, 139292), (718, 109610), (970, 81134), (1130, 69646), (1436, 54805), (1795, 43844), (1940, 40567), (2260, 34823), (3590, 21922), (7180, 10961)]