18973188

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:665

約数の個数: 72

約数和(自身を含む): 52468416

約数和(自身を除く): 33495228

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 71, 78, 117, 142, 156, 213, 234, 284, 426, 468, 571, 639, 852, 923, 1142, 1278, 1713, 1846, 2284, 2556, 2769, 3426, 3692, 5139, 5538, 6852, 7423, 8307, 10278, 11076, 14846, 16614, 20556, 22269, 29692, 33228, 40541, 44538, 66807, 81082, 89076, 121623, 133614, 162164, 243246, 267228, 364869, 486492, 527033, 729738, 1054066, 1459476, 1581099, 2108132, 3162198, 4743297, 6324396, 9486594, 18973188]

約数ペア:

[(1, 18973188), (2, 9486594), (3, 6324396), (4, 4743297), (6, 3162198), (9, 2108132), (12, 1581099), (13, 1459476), (18, 1054066), (26, 729738), (36, 527033), (39, 486492), (52, 364869), (71, 267228), (78, 243246), (117, 162164), (142, 133614), (156, 121623), (213, 89076), (234, 81082), (284, 66807), (426, 44538), (468, 40541), (571, 33228), (639, 29692), (852, 22269), (923, 20556), (1142, 16614), (1278, 14846), (1713, 11076), (1846, 10278), (2284, 8307), (2556, 7423), (2769, 6852), (3426, 5538), (3692, 5139)]