2781220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{563}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 6632640

約数和(自身を除く): 3851420

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 563, 988, 1126, 1235, 2252, 2470, 2815, 4940, 5630, 7319, 10697, 11260, 14638, 21394, 29276, 36595, 42788, 53485, 73190, 106970, 139061, 146380, 213940, 278122, 556244, 695305, 1390610, 2781220]

約数ペア:

[(1, 2781220), (2, 1390610), (4, 695305), (5, 556244), (10, 278122), (13, 213940), (19, 146380), (20, 139061), (26, 106970), (38, 73190), (52, 53485), (65, 42788), (76, 36595), (95, 29276), (130, 21394), (190, 14638), (247, 11260), (260, 10697), (380, 7319), (494, 5630), (563, 4940), (988, 2815), (1126, 2470), (1235, 2252)]