19903572

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{599}}^1$

素因数の和:693

約数の個数: 72

約数和(自身を含む): 55036800

約数和(自身を除く): 35133228

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, 599, 639, 852, 923, 1198, 1278, 1797, 1846, 2396, 2556, 2769, 3594, 3692, 5391, 5538, 7188, 7787, 8307, 10782, 11076, 15574, 16614, 21564, 23361, 31148, 33228, 42529, 46722, 70083, 85058, 93444, 127587, 140166, 170116, 255174, 280332, 382761, 510348, 552877, 765522, 1105754, 1531044, 1658631, 2211508, 3317262, 4975893, 6634524, 9951786, 19903572]

約数ペア:

[(1, 19903572), (2, 9951786), (3, 6634524), (4, 4975893), (6, 3317262), (9, 2211508), (12, 1658631), (13, 1531044), (18, 1105754), (26, 765522), (36, 552877), (39, 510348), (52, 382761), (71, 280332), (78, 255174), (117, 170116), (142, 140166), (156, 127587), (213, 93444), (234, 85058), (284, 70083), (426, 46722), (468, 42529), (599, 33228), (639, 31148), (852, 23361), (923, 21564), (1198, 16614), (1278, 15574), (1797, 11076), (1846, 10782), (2396, 8307), (2556, 7787), (2769, 7188), (3594, 5538), (3692, 5391)]