18405972

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{587}}^1$

素因数の和:677

約数の個数: 72

約数和(自身を含む): 50939616

約数和(自身を除く): 32533644

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 67, 78, 117, 134, 156, 201, 234, 268, 402, 468, 587, 603, 804, 871, 1174, 1206, 1742, 1761, 2348, 2412, 2613, 3484, 3522, 5226, 5283, 7044, 7631, 7839, 10452, 10566, 15262, 15678, 21132, 22893, 30524, 31356, 39329, 45786, 68679, 78658, 91572, 117987, 137358, 157316, 235974, 274716, 353961, 471948, 511277, 707922, 1022554, 1415844, 1533831, 2045108, 3067662, 4601493, 6135324, 9202986, 18405972]

約数ペア:

[(1, 18405972), (2, 9202986), (3, 6135324), (4, 4601493), (6, 3067662), (9, 2045108), (12, 1533831), (13, 1415844), (18, 1022554), (26, 707922), (36, 511277), (39, 471948), (52, 353961), (67, 274716), (78, 235974), (117, 157316), (134, 137358), (156, 117987), (201, 91572), (234, 78658), (268, 68679), (402, 45786), (468, 39329), (587, 31356), (603, 30524), (804, 22893), (871, 21132), (1174, 15678), (1206, 15262), (1742, 10566), (1761, 10452), (2348, 7839), (2412, 7631), (2613, 7044), (3484, 5283), (3522, 5226)]