21080970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:280

約数の個数: 96

約数和(自身を含む): 58378320

約数和(自身を除く): 37297350

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 41, 45, 58, 82, 87, 90, 123, 145, 174, 197, 205, 246, 261, 290, 369, 394, 410, 435, 522, 591, 615, 738, 870, 985, 1182, 1189, 1230, 1305, 1773, 1845, 1970, 2378, 2610, 2955, 3546, 3567, 3690, 5713, 5910, 5945, 7134, 8077, 8865, 10701, 11426, 11890, 16154, 17139, 17730, 17835, 21402, 24231, 28565, 34278, 35670, 40385, 48462, 51417, 53505, 57130, 72693, 80770, 85695, 102834, 107010, 121155, 145386, 171390, 234233, 242310, 257085, 363465, 468466, 514170, 702699, 726930, 1171165, 1405398, 2108097, 2342330, 3513495, 4216194, 7026990, 10540485, 21080970]

約数ペア:

[(1, 21080970), (2, 10540485), (3, 7026990), (5, 4216194), (6, 3513495), (9, 2342330), (10, 2108097), (15, 1405398), (18, 1171165), (29, 726930), (30, 702699), (41, 514170), (45, 468466), (58, 363465), (82, 257085), (87, 242310), (90, 234233), (123, 171390), (145, 145386), (174, 121155), (197, 107010), (205, 102834), (246, 85695), (261, 80770), (290, 72693), (369, 57130), (394, 53505), (410, 51417), (435, 48462), (522, 40385), (591, 35670), (615, 34278), (738, 28565), (870, 24231), (985, 21402), (1182, 17835), (1189, 17730), (1230, 17139), (1305, 16154), (1773, 11890), (1845, 11426), (1970, 10701), (2378, 8865), (2610, 8077), (2955, 7134), (3546, 5945), (3567, 5910), (3690, 5713)]