21953484

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:500

約数の個数: 96

約数和(自身を含む): 66124800

約数和(自身を除く): 44171316

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 71, 84, 108, 126, 142, 189, 213, 252, 284, 378, 409, 426, 497, 639, 756, 818, 852, 994, 1227, 1278, 1491, 1636, 1917, 1988, 2454, 2556, 2863, 2982, 3681, 3834, 4473, 4908, 5726, 5964, 7362, 7668, 8589, 8946, 11043, 11452, 13419, 14724, 17178, 17892, 22086, 25767, 26838, 29039, 34356, 44172, 51534, 53676, 58078, 77301, 87117, 103068, 116156, 154602, 174234, 203273, 261351, 309204, 348468, 406546, 522702, 609819, 784053, 813092, 1045404, 1219638, 1568106, 1829457, 2439276, 3136212, 3658914, 5488371, 7317828, 10976742, 21953484]

約数ペア:

[(1, 21953484), (2, 10976742), (3, 7317828), (4, 5488371), (6, 3658914), (7, 3136212), (9, 2439276), (12, 1829457), (14, 1568106), (18, 1219638), (21, 1045404), (27, 813092), (28, 784053), (36, 609819), (42, 522702), (54, 406546), (63, 348468), (71, 309204), (84, 261351), (108, 203273), (126, 174234), (142, 154602), (189, 116156), (213, 103068), (252, 87117), (284, 77301), (378, 58078), (409, 53676), (426, 51534), (497, 44172), (639, 34356), (756, 29039), (818, 26838), (852, 25767), (994, 22086), (1227, 17892), (1278, 17178), (1491, 14724), (1636, 13419), (1917, 11452), (1988, 11043), (2454, 8946), (2556, 8589), (2863, 7668), (2982, 7362), (3681, 5964), (3834, 5726), (4473, 4908)]