21416505

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 18396615

約数列:

[1, 3, 5, 11, 15, 31, 33, 53, 55, 79, 93, 155, 159, 165, 237, 265, 341, 395, 465, 583, 795, 869, 1023, 1185, 1643, 1705, 1749, 2449, 2607, 2915, 4187, 4345, 4929, 5115, 7347, 8215, 8745, 12245, 12561, 13035, 18073, 20935, 24645, 26939, 36735, 46057, 54219, 62805, 80817, 90365, 129797, 134695, 138171, 230285, 271095, 389391, 404085, 648985, 690855, 1427767, 1946955, 4283301, 7138835, 21416505]

約数ペア:

[(1, 21416505), (3, 7138835), (5, 4283301), (11, 1946955), (15, 1427767), (31, 690855), (33, 648985), (53, 404085), (55, 389391), (79, 271095), (93, 230285), (155, 138171), (159, 134695), (165, 129797), (237, 90365), (265, 80817), (341, 62805), (395, 54219), (465, 46057), (583, 36735), (795, 26939), (869, 24645), (1023, 20935), (1185, 18073), (1643, 13035), (1705, 12561), (1749, 12245), (2449, 8745), (2607, 8215), (2915, 7347), (4187, 5115), (4345, 4929)]