261317940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{25771}}^1$

素因数の和:25809

約数の個数: 72

約数和(自身を含む): 792334368

約数和(自身を除く): 531016428

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2535, 3380, 5070, 10140, 25771, 51542, 77313, 103084, 128855, 154626, 257710, 309252, 335023, 386565, 515420, 670046, 773130, 1005069, 1340092, 1546260, 1675115, 2010138, 3350230, 4020276, 4355299, 5025345, 6700460, 8710598, 10050690, 13065897, 17421196, 20101380, 21776495, 26131794, 43552990, 52263588, 65329485, 87105980, 130658970, 261317940]

約数ペア:

[(1, 261317940), (2, 130658970), (3, 87105980), (4, 65329485), (5, 52263588), (6, 43552990), (10, 26131794), (12, 21776495), (13, 20101380), (15, 17421196), (20, 13065897), (26, 10050690), (30, 8710598), (39, 6700460), (52, 5025345), (60, 4355299), (65, 4020276), (78, 3350230), (130, 2010138), (156, 1675115), (169, 1546260), (195, 1340092), (260, 1005069), (338, 773130), (390, 670046), (507, 515420), (676, 386565), (780, 335023), (845, 309252), (1014, 257710), (1690, 154626), (2028, 128855), (2535, 103084), (3380, 77313), (5070, 51542), (10140, 25771)]