21969900

素因数分解:

$2^2\times 3^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:205

約数の個数: 144

約数和(自身を含む): 72217600

約数和(自身を除く): 50247700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 79, 90, 100, 103, 108, 135, 150, 158, 180, 206, 225, 237, 270, 300, 309, 316, 395, 412, 450, 474, 515, 540, 618, 675, 711, 790, 900, 927, 948, 1030, 1185, 1236, 1350, 1422, 1545, 1580, 1854, 1975, 2060, 2133, 2370, 2575, 2700, 2781, 2844, 3090, 3555, 3708, 3950, 4266, 4635, 4740, 5150, 5562, 5925, 6180, 7110, 7725, 7900, 8137, 8532, 9270, 10300, 10665, 11124, 11850, 13905, 14220, 15450, 16274, 17775, 18540, 21330, 23175, 23700, 24411, 27810, 30900, 32548, 35550, 40685, 42660, 46350, 48822, 53325, 55620, 69525, 71100, 73233, 81370, 92700, 97644, 106650, 122055, 139050, 146466, 162740, 203425, 213300, 219699, 244110, 278100, 292932, 366165, 406850, 439398, 488220, 610275, 732330, 813700, 878796, 1098495, 1220550, 1464660, 1830825, 2196990, 2441100, 3661650, 4393980, 5492475, 7323300, 10984950, 21969900]

約数ペア:

[(1, 21969900), (2, 10984950), (3, 7323300), (4, 5492475), (5, 4393980), (6, 3661650), (9, 2441100), (10, 2196990), (12, 1830825), (15, 1464660), (18, 1220550), (20, 1098495), (25, 878796), (27, 813700), (30, 732330), (36, 610275), (45, 488220), (50, 439398), (54, 406850), (60, 366165), (75, 292932), (79, 278100), (90, 244110), (100, 219699), (103, 213300), (108, 203425), (135, 162740), (150, 146466), (158, 139050), (180, 122055), (206, 106650), (225, 97644), (237, 92700), (270, 81370), (300, 73233), (309, 71100), (316, 69525), (395, 55620), (412, 53325), (450, 48822), (474, 46350), (515, 42660), (540, 40685), (618, 35550), (675, 32548), (711, 30900), (790, 27810), (900, 24411), (927, 23700), (948, 23175), (1030, 21330), (1185, 18540), (1236, 17775), (1350, 16274), (1422, 15450), (1545, 14220), (1580, 13905), (1854, 11850), (1975, 11124), (2060, 10665), (2133, 10300), (2370, 9270), (2575, 8532), (2700, 8137), (2781, 7900), (2844, 7725), (3090, 7110), (3555, 6180), (3708, 5925), (3950, 5562), (4266, 5150), (4635, 4740)]