20475180

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{383}}^1$

素因数の和:418

約数の個数: 144

約数和(自身を含む): 70447104

約数和(自身を除く): 49971924

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 132, 135, 162, 165, 180, 198, 220, 243, 270, 297, 324, 330, 383, 396, 405, 486, 495, 540, 594, 660, 766, 810, 891, 972, 990, 1149, 1188, 1215, 1485, 1532, 1620, 1782, 1915, 1980, 2298, 2430, 2673, 2970, 3447, 3564, 3830, 4213, 4455, 4596, 4860, 5346, 5745, 5940, 6894, 7660, 8426, 8910, 10341, 10692, 11490, 12639, 13365, 13788, 16852, 17235, 17820, 20682, 21065, 22980, 25278, 26730, 31023, 34470, 37917, 41364, 42130, 50556, 51705, 53460, 62046, 63195, 68940, 75834, 84260, 93069, 103410, 113751, 124092, 126390, 151668, 155115, 186138, 189585, 206820, 227502, 252780, 310230, 341253, 372276, 379170, 455004, 465345, 568755, 620460, 682506, 758340, 930690, 1023759, 1137510, 1365012, 1706265, 1861380, 2047518, 2275020, 3412530, 4095036, 5118795, 6825060, 10237590, 20475180]

約数ペア:

[(1, 20475180), (2, 10237590), (3, 6825060), (4, 5118795), (5, 4095036), (6, 3412530), (9, 2275020), (10, 2047518), (11, 1861380), (12, 1706265), (15, 1365012), (18, 1137510), (20, 1023759), (22, 930690), (27, 758340), (30, 682506), (33, 620460), (36, 568755), (44, 465345), (45, 455004), (54, 379170), (55, 372276), (60, 341253), (66, 310230), (81, 252780), (90, 227502), (99, 206820), (108, 189585), (110, 186138), (132, 155115), (135, 151668), (162, 126390), (165, 124092), (180, 113751), (198, 103410), (220, 93069), (243, 84260), (270, 75834), (297, 68940), (324, 63195), (330, 62046), (383, 53460), (396, 51705), (405, 50556), (486, 42130), (495, 41364), (540, 37917), (594, 34470), (660, 31023), (766, 26730), (810, 25278), (891, 22980), (972, 21065), (990, 20682), (1149, 17820), (1188, 17235), (1215, 16852), (1485, 13788), (1532, 13365), (1620, 12639), (1782, 11490), (1915, 10692), (1980, 10341), (2298, 8910), (2430, 8426), (2673, 7660), (2970, 6894), (3447, 5940), (3564, 5745), (3830, 5346), (4213, 4860), (4455, 4596)]