21072450

素因数分解:

$2^1\times 3^1\times 5^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:137

約数の個数: 144

約数和(自身を含む): 63103104

約数和(自身を除く): 42030654

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 47, 49, 50, 61, 70, 75, 94, 98, 105, 122, 141, 147, 150, 175, 183, 210, 235, 245, 282, 294, 305, 329, 350, 366, 427, 470, 490, 525, 610, 658, 705, 735, 854, 915, 987, 1050, 1175, 1225, 1281, 1410, 1470, 1525, 1645, 1830, 1974, 2135, 2303, 2350, 2450, 2562, 2867, 2989, 3050, 3290, 3525, 3675, 4270, 4575, 4606, 4935, 5734, 5978, 6405, 6909, 7050, 7350, 8225, 8601, 8967, 9150, 9870, 10675, 11515, 12810, 13818, 14335, 14945, 16450, 17202, 17934, 20069, 21350, 23030, 24675, 28670, 29890, 32025, 34545, 40138, 43005, 44835, 49350, 57575, 60207, 64050, 69090, 71675, 74725, 86010, 89670, 100345, 115150, 120414, 140483, 143350, 149450, 172725, 200690, 215025, 224175, 280966, 301035, 345450, 421449, 430050, 448350, 501725, 602070, 702415, 842898, 1003450, 1404830, 1505175, 2107245, 3010350, 3512075, 4214490, 7024150, 10536225, 21072450]

約数ペア:

[(1, 21072450), (2, 10536225), (3, 7024150), (5, 4214490), (6, 3512075), (7, 3010350), (10, 2107245), (14, 1505175), (15, 1404830), (21, 1003450), (25, 842898), (30, 702415), (35, 602070), (42, 501725), (47, 448350), (49, 430050), (50, 421449), (61, 345450), (70, 301035), (75, 280966), (94, 224175), (98, 215025), (105, 200690), (122, 172725), (141, 149450), (147, 143350), (150, 140483), (175, 120414), (183, 115150), (210, 100345), (235, 89670), (245, 86010), (282, 74725), (294, 71675), (305, 69090), (329, 64050), (350, 60207), (366, 57575), (427, 49350), (470, 44835), (490, 43005), (525, 40138), (610, 34545), (658, 32025), (705, 29890), (735, 28670), (854, 24675), (915, 23030), (987, 21350), (1050, 20069), (1175, 17934), (1225, 17202), (1281, 16450), (1410, 14945), (1470, 14335), (1525, 13818), (1645, 12810), (1830, 11515), (1974, 10675), (2135, 9870), (2303, 9150), (2350, 8967), (2450, 8601), (2562, 8225), (2867, 7350), (2989, 7050), (3050, 6909), (3290, 6405), (3525, 5978), (3675, 5734), (4270, 4935), (4575, 4606)]