20819970

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2659}}^1$

素因数の和:2704

約数の個数: 64

約数和(自身を含む): 57456000

約数和(自身を除く): 36636030

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 29, 30, 45, 54, 58, 87, 90, 135, 145, 174, 261, 270, 290, 435, 522, 783, 870, 1305, 1566, 2610, 2659, 3915, 5318, 7830, 7977, 13295, 15954, 23931, 26590, 39885, 47862, 71793, 77111, 79770, 119655, 143586, 154222, 231333, 239310, 358965, 385555, 462666, 693999, 717930, 771110, 1156665, 1387998, 2081997, 2313330, 3469995, 4163994, 6939990, 10409985, 20819970]

約数ペア:

[(1, 20819970), (2, 10409985), (3, 6939990), (5, 4163994), (6, 3469995), (9, 2313330), (10, 2081997), (15, 1387998), (18, 1156665), (27, 771110), (29, 717930), (30, 693999), (45, 462666), (54, 385555), (58, 358965), (87, 239310), (90, 231333), (135, 154222), (145, 143586), (174, 119655), (261, 79770), (270, 77111), (290, 71793), (435, 47862), (522, 39885), (783, 26590), (870, 23931), (1305, 15954), (1566, 13295), (2610, 7977), (2659, 7830), (3915, 5318)]