21757470

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{41}}^1$

素因数の和:103

約数の個数: 144

約数和(自身を含む): 65672208

約数和(自身を除く): 43914738

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 41, 42, 49, 57, 70, 82, 95, 98, 105, 114, 123, 133, 147, 190, 205, 210, 245, 246, 266, 285, 287, 294, 361, 399, 410, 490, 570, 574, 615, 665, 722, 735, 779, 798, 861, 931, 1083, 1230, 1330, 1435, 1470, 1558, 1722, 1805, 1862, 1995, 2009, 2166, 2337, 2527, 2793, 2870, 3610, 3895, 3990, 4018, 4305, 4655, 4674, 5054, 5415, 5453, 5586, 6027, 7581, 7790, 8610, 9310, 10045, 10830, 10906, 11685, 12054, 12635, 13965, 14801, 15162, 16359, 17689, 20090, 23370, 25270, 27265, 27930, 29602, 30135, 32718, 35378, 37905, 38171, 44403, 53067, 54530, 60270, 74005, 75810, 76342, 81795, 88445, 88806, 103607, 106134, 114513, 148010, 163590, 176890, 190855, 207214, 222015, 229026, 265335, 310821, 381710, 444030, 518035, 530670, 572565, 621642, 725249, 1036070, 1145130, 1450498, 1554105, 2175747, 3108210, 3626245, 4351494, 7252490, 10878735, 21757470]

約数ペア:

[(1, 21757470), (2, 10878735), (3, 7252490), (5, 4351494), (6, 3626245), (7, 3108210), (10, 2175747), (14, 1554105), (15, 1450498), (19, 1145130), (21, 1036070), (30, 725249), (35, 621642), (38, 572565), (41, 530670), (42, 518035), (49, 444030), (57, 381710), (70, 310821), (82, 265335), (95, 229026), (98, 222015), (105, 207214), (114, 190855), (123, 176890), (133, 163590), (147, 148010), (190, 114513), (205, 106134), (210, 103607), (245, 88806), (246, 88445), (266, 81795), (285, 76342), (287, 75810), (294, 74005), (361, 60270), (399, 54530), (410, 53067), (490, 44403), (570, 38171), (574, 37905), (615, 35378), (665, 32718), (722, 30135), (735, 29602), (779, 27930), (798, 27265), (861, 25270), (931, 23370), (1083, 20090), (1230, 17689), (1330, 16359), (1435, 15162), (1470, 14801), (1558, 13965), (1722, 12635), (1805, 12054), (1862, 11685), (1995, 10906), (2009, 10830), (2166, 10045), (2337, 9310), (2527, 8610), (2793, 7790), (2870, 7581), (3610, 6027), (3895, 5586), (3990, 5453), (4018, 5415), (4305, 5054), (4655, 4674)]