21396726

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1499}}^1$

素因数の和:1581

約数の個数: 48

約数和(自身を含む): 50778000

約数和(自身を除く): 29381274

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 61, 78, 117, 122, 183, 234, 366, 549, 793, 1098, 1499, 1586, 2379, 2998, 4497, 4758, 7137, 8994, 13491, 14274, 19487, 26982, 38974, 58461, 91439, 116922, 175383, 182878, 274317, 350766, 548634, 822951, 1188707, 1645902, 2377414, 3566121, 7132242, 10698363, 21396726]

約数ペア:

[(1, 21396726), (2, 10698363), (3, 7132242), (6, 3566121), (9, 2377414), (13, 1645902), (18, 1188707), (26, 822951), (39, 548634), (61, 350766), (78, 274317), (117, 182878), (122, 175383), (183, 116922), (234, 91439), (366, 58461), (549, 38974), (793, 26982), (1098, 19487), (1499, 14274), (1586, 13491), (2379, 8994), (2998, 7137), (4497, 4758)]