21742320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^2$

素因数の和:179

約数の個数: 120

約数和(自身を含む): 72356976

約数和(自身を除く): 50614656

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 73, 80, 85, 102, 120, 136, 146, 170, 204, 219, 240, 255, 272, 292, 340, 365, 408, 438, 510, 584, 680, 730, 816, 876, 1020, 1095, 1168, 1241, 1360, 1460, 1752, 2040, 2190, 2482, 2920, 3504, 3723, 4080, 4380, 4964, 5329, 5840, 6205, 7446, 8760, 9928, 10658, 12410, 14892, 15987, 17520, 18615, 19856, 21316, 24820, 26645, 29784, 31974, 37230, 42632, 49640, 53290, 59568, 63948, 74460, 79935, 85264, 90593, 99280, 106580, 127896, 148920, 159870, 181186, 213160, 255792, 271779, 297840, 319740, 362372, 426320, 452965, 543558, 639480, 724744, 905930, 1087116, 1278960, 1358895, 1449488, 1811860, 2174232, 2717790, 3623720, 4348464, 5435580, 7247440, 10871160, 21742320]

約数ペア:

[(1, 21742320), (2, 10871160), (3, 7247440), (4, 5435580), (5, 4348464), (6, 3623720), (8, 2717790), (10, 2174232), (12, 1811860), (15, 1449488), (16, 1358895), (17, 1278960), (20, 1087116), (24, 905930), (30, 724744), (34, 639480), (40, 543558), (48, 452965), (51, 426320), (60, 362372), (68, 319740), (73, 297840), (80, 271779), (85, 255792), (102, 213160), (120, 181186), (136, 159870), (146, 148920), (170, 127896), (204, 106580), (219, 99280), (240, 90593), (255, 85264), (272, 79935), (292, 74460), (340, 63948), (365, 59568), (408, 53290), (438, 49640), (510, 42632), (584, 37230), (680, 31974), (730, 29784), (816, 26645), (876, 24820), (1020, 21316), (1095, 19856), (1168, 18615), (1241, 17520), (1360, 15987), (1460, 14892), (1752, 12410), (2040, 10658), (2190, 9928), (2482, 8760), (2920, 7446), (3504, 6205), (3723, 5840), (4080, 5329), (4380, 4964)]