21991500

素因数分解:

$2^2\times 3^5\times 5^3\times {\mathrm{181}}^1$

素因数の和:215

約数の個数: 144

約数和(自身を含む): 72342816

約数和(自身を除く): 50351316

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 125, 135, 150, 162, 180, 181, 225, 243, 250, 270, 300, 324, 362, 375, 405, 450, 486, 500, 540, 543, 675, 724, 750, 810, 900, 905, 972, 1086, 1125, 1215, 1350, 1500, 1620, 1629, 1810, 2025, 2172, 2250, 2430, 2700, 2715, 3258, 3375, 3620, 4050, 4500, 4525, 4860, 4887, 5430, 6075, 6516, 6750, 8100, 8145, 9050, 9774, 10125, 10860, 12150, 13500, 13575, 14661, 16290, 18100, 19548, 20250, 22625, 24300, 24435, 27150, 29322, 30375, 32580, 40500, 40725, 43983, 45250, 48870, 54300, 58644, 60750, 67875, 73305, 81450, 87966, 90500, 97740, 121500, 122175, 135750, 146610, 162900, 175932, 203625, 219915, 244350, 271500, 293220, 366525, 407250, 439830, 488700, 610875, 733050, 814500, 879660, 1099575, 1221750, 1466100, 1832625, 2199150, 2443500, 3665250, 4398300, 5497875, 7330500, 10995750, 21991500]

約数ペア:

[(1, 21991500), (2, 10995750), (3, 7330500), (4, 5497875), (5, 4398300), (6, 3665250), (9, 2443500), (10, 2199150), (12, 1832625), (15, 1466100), (18, 1221750), (20, 1099575), (25, 879660), (27, 814500), (30, 733050), (36, 610875), (45, 488700), (50, 439830), (54, 407250), (60, 366525), (75, 293220), (81, 271500), (90, 244350), (100, 219915), (108, 203625), (125, 175932), (135, 162900), (150, 146610), (162, 135750), (180, 122175), (181, 121500), (225, 97740), (243, 90500), (250, 87966), (270, 81450), (300, 73305), (324, 67875), (362, 60750), (375, 58644), (405, 54300), (450, 48870), (486, 45250), (500, 43983), (540, 40725), (543, 40500), (675, 32580), (724, 30375), (750, 29322), (810, 27150), (900, 24435), (905, 24300), (972, 22625), (1086, 20250), (1125, 19548), (1215, 18100), (1350, 16290), (1500, 14661), (1620, 13575), (1629, 13500), (1810, 12150), (2025, 10860), (2172, 10125), (2250, 9774), (2430, 9050), (2700, 8145), (2715, 8100), (3258, 6750), (3375, 6516), (3620, 6075), (4050, 5430), (4500, 4887), (4525, 4860)]