18627660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{433}}^1$

素因数の和:687

約数の個数: 72

約数和(自身を含む): 56871360

約数和(自身を除く): 38243700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 239, 433, 478, 717, 866, 956, 1195, 1299, 1434, 1732, 2151, 2165, 2390, 2598, 2868, 3585, 3897, 4302, 4330, 4780, 5196, 6495, 7170, 7794, 8604, 8660, 10755, 12990, 14340, 15588, 19485, 21510, 25980, 38970, 43020, 77940, 103487, 206974, 310461, 413948, 517435, 620922, 931383, 1034870, 1241844, 1552305, 1862766, 2069740, 3104610, 3725532, 4656915, 6209220, 9313830, 18627660]

約数ペア:

[(1, 18627660), (2, 9313830), (3, 6209220), (4, 4656915), (5, 3725532), (6, 3104610), (9, 2069740), (10, 1862766), (12, 1552305), (15, 1241844), (18, 1034870), (20, 931383), (30, 620922), (36, 517435), (45, 413948), (60, 310461), (90, 206974), (180, 103487), (239, 77940), (433, 43020), (478, 38970), (717, 25980), (866, 21510), (956, 19485), (1195, 15588), (1299, 14340), (1434, 12990), (1732, 10755), (2151, 8660), (2165, 8604), (2390, 7794), (2598, 7170), (2868, 6495), (3585, 5196), (3897, 4780), (4302, 4330)]