21393225

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{47}}^1$

素因数の和:104

約数の個数: 108

約数和(自身を含む): 47508864

約数和(自身を除く): 26115639

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 25, 35, 45, 47, 51, 63, 75, 85, 105, 119, 141, 153, 175, 225, 235, 255, 289, 315, 329, 357, 423, 425, 525, 595, 705, 765, 799, 867, 987, 1071, 1175, 1275, 1445, 1575, 1645, 1785, 2023, 2115, 2397, 2601, 2961, 2975, 3525, 3825, 3995, 4335, 4935, 5355, 5593, 6069, 7191, 7225, 8225, 8925, 10115, 10575, 11985, 13005, 13583, 14805, 16779, 18207, 19975, 21675, 24675, 26775, 27965, 30345, 35955, 40749, 50337, 50575, 59925, 65025, 67915, 74025, 83895, 91035, 95081, 122247, 139825, 151725, 179775, 203745, 251685, 285243, 339575, 419475, 455175, 475405, 611235, 855729, 1018725, 1258425, 1426215, 2377025, 3056175, 4278645, 7131075, 21393225]

約数ペア:

[(1, 21393225), (3, 7131075), (5, 4278645), (7, 3056175), (9, 2377025), (15, 1426215), (17, 1258425), (21, 1018725), (25, 855729), (35, 611235), (45, 475405), (47, 455175), (51, 419475), (63, 339575), (75, 285243), (85, 251685), (105, 203745), (119, 179775), (141, 151725), (153, 139825), (175, 122247), (225, 95081), (235, 91035), (255, 83895), (289, 74025), (315, 67915), (329, 65025), (357, 59925), (423, 50575), (425, 50337), (525, 40749), (595, 35955), (705, 30345), (765, 27965), (799, 26775), (867, 24675), (987, 21675), (1071, 19975), (1175, 18207), (1275, 16779), (1445, 14805), (1575, 13583), (1645, 13005), (1785, 11985), (2023, 10575), (2115, 10115), (2397, 8925), (2601, 8225), (2961, 7225), (2975, 7191), (3525, 6069), (3825, 5593), (3995, 5355), (4335, 4935)]