78612560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{281}}^1$

素因数の和:576

約数の個数: 80

約数和(自身を含む): 198268560

約数和(自身を除く): 119656000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 269, 281, 520, 538, 562, 1040, 1076, 1124, 1345, 1405, 2152, 2248, 2690, 2810, 3497, 3653, 4304, 4496, 5380, 5620, 6994, 7306, 10760, 11240, 13988, 14612, 17485, 18265, 21520, 22480, 27976, 29224, 34970, 36530, 55952, 58448, 69940, 73060, 75589, 139880, 146120, 151178, 279760, 292240, 302356, 377945, 604712, 755890, 982657, 1209424, 1511780, 1965314, 3023560, 3930628, 4913285, 6047120, 7861256, 9826570, 15722512, 19653140, 39306280, 78612560]

約数ペア:

[(1, 78612560), (2, 39306280), (4, 19653140), (5, 15722512), (8, 9826570), (10, 7861256), (13, 6047120), (16, 4913285), (20, 3930628), (26, 3023560), (40, 1965314), (52, 1511780), (65, 1209424), (80, 982657), (104, 755890), (130, 604712), (208, 377945), (260, 302356), (269, 292240), (281, 279760), (520, 151178), (538, 146120), (562, 139880), (1040, 75589), (1076, 73060), (1124, 69940), (1345, 58448), (1405, 55952), (2152, 36530), (2248, 34970), (2690, 29224), (2810, 27976), (3497, 22480), (3653, 21520), (4304, 18265), (4496, 17485), (5380, 14612), (5620, 13988), (6994, 11240), (7306, 10760)]