18365220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{397}}^1$

素因数の和:669

約数の個数: 72

約数和(自身を含む): 56065464

約数和(自身を除く): 37700244

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 257, 397, 514, 771, 794, 1028, 1191, 1285, 1542, 1588, 1985, 2313, 2382, 2570, 3084, 3573, 3855, 3970, 4626, 4764, 5140, 5955, 7146, 7710, 7940, 9252, 11565, 11910, 14292, 15420, 17865, 23130, 23820, 35730, 46260, 71460, 102029, 204058, 306087, 408116, 510145, 612174, 918261, 1020290, 1224348, 1530435, 1836522, 2040580, 3060870, 3673044, 4591305, 6121740, 9182610, 18365220]

約数ペア:

[(1, 18365220), (2, 9182610), (3, 6121740), (4, 4591305), (5, 3673044), (6, 3060870), (9, 2040580), (10, 1836522), (12, 1530435), (15, 1224348), (18, 1020290), (20, 918261), (30, 612174), (36, 510145), (45, 408116), (60, 306087), (90, 204058), (180, 102029), (257, 71460), (397, 46260), (514, 35730), (771, 23820), (794, 23130), (1028, 17865), (1191, 15420), (1285, 14292), (1542, 11910), (1588, 11565), (1985, 9252), (2313, 7940), (2382, 7710), (2570, 7146), (3084, 5955), (3573, 5140), (3855, 4764), (3970, 4626)]