30531420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2389}}^1$

素因数の和:2475

約数の個数: 72

約数和(自身を含む): 93955680

約数和(自身を除く): 63424260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2389, 2556, 3195, 4260, 4778, 6390, 7167, 9556, 11945, 12780, 14334, 21501, 23890, 28668, 35835, 43002, 47780, 71670, 86004, 107505, 143340, 169619, 215010, 339238, 430020, 508857, 678476, 848095, 1017714, 1526571, 1696190, 2035428, 2544285, 3053142, 3392380, 5088570, 6106284, 7632855, 10177140, 15265710, 30531420]

約数ペア:

[(1, 30531420), (2, 15265710), (3, 10177140), (4, 7632855), (5, 6106284), (6, 5088570), (9, 3392380), (10, 3053142), (12, 2544285), (15, 2035428), (18, 1696190), (20, 1526571), (30, 1017714), (36, 848095), (45, 678476), (60, 508857), (71, 430020), (90, 339238), (142, 215010), (180, 169619), (213, 143340), (284, 107505), (355, 86004), (426, 71670), (639, 47780), (710, 43002), (852, 35835), (1065, 28668), (1278, 23890), (1420, 21501), (2130, 14334), (2389, 12780), (2556, 11945), (3195, 9556), (4260, 7167), (4778, 6390)]