21723870

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:166

約数の個数: 128

約数和(自身を含む): 63700992

約数和(自身を除く): 41977122

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 31, 35, 42, 47, 62, 70, 71, 93, 94, 105, 141, 142, 155, 186, 210, 213, 217, 235, 282, 310, 329, 355, 426, 434, 465, 470, 497, 651, 658, 705, 710, 930, 987, 994, 1065, 1085, 1302, 1410, 1457, 1491, 1645, 1974, 2130, 2170, 2201, 2485, 2914, 2982, 3255, 3290, 3337, 4371, 4402, 4935, 4970, 6510, 6603, 6674, 7285, 7455, 8742, 9870, 10011, 10199, 11005, 13206, 14570, 14910, 15407, 16685, 20022, 20398, 21855, 22010, 23359, 30597, 30814, 33015, 33370, 43710, 46221, 46718, 50055, 50995, 61194, 66030, 70077, 77035, 92442, 100110, 101990, 103447, 116795, 140154, 152985, 154070, 206894, 231105, 233590, 305970, 310341, 350385, 462210, 517235, 620682, 700770, 724129, 1034470, 1448258, 1551705, 2172387, 3103410, 3620645, 4344774, 7241290, 10861935, 21723870]

約数ペア:

[(1, 21723870), (2, 10861935), (3, 7241290), (5, 4344774), (6, 3620645), (7, 3103410), (10, 2172387), (14, 1551705), (15, 1448258), (21, 1034470), (30, 724129), (31, 700770), (35, 620682), (42, 517235), (47, 462210), (62, 350385), (70, 310341), (71, 305970), (93, 233590), (94, 231105), (105, 206894), (141, 154070), (142, 152985), (155, 140154), (186, 116795), (210, 103447), (213, 101990), (217, 100110), (235, 92442), (282, 77035), (310, 70077), (329, 66030), (355, 61194), (426, 50995), (434, 50055), (465, 46718), (470, 46221), (497, 43710), (651, 33370), (658, 33015), (705, 30814), (710, 30597), (930, 23359), (987, 22010), (994, 21855), (1065, 20398), (1085, 20022), (1302, 16685), (1410, 15407), (1457, 14910), (1491, 14570), (1645, 13206), (1974, 11005), (2130, 10199), (2170, 10011), (2201, 9870), (2485, 8742), (2914, 7455), (2982, 7285), (3255, 6674), (3290, 6603), (3337, 6510), (4371, 4970), (4402, 4935)]