21650820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{541}}^1$

素因数の和:605

約数の個数: 96

約数和(自身を含む): 65560320

約数和(自身を除く): 43909500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 29, 30, 46, 58, 60, 69, 87, 92, 115, 116, 138, 145, 174, 230, 276, 290, 345, 348, 435, 460, 541, 580, 667, 690, 870, 1082, 1334, 1380, 1623, 1740, 2001, 2164, 2668, 2705, 3246, 3335, 4002, 5410, 6492, 6670, 8004, 8115, 10005, 10820, 12443, 13340, 15689, 16230, 20010, 24886, 31378, 32460, 37329, 40020, 47067, 49772, 62215, 62756, 74658, 78445, 94134, 124430, 149316, 156890, 186645, 188268, 235335, 248860, 313780, 360847, 373290, 470670, 721694, 746580, 941340, 1082541, 1443388, 1804235, 2165082, 3608470, 4330164, 5412705, 7216940, 10825410, 21650820]

約数ペア:

[(1, 21650820), (2, 10825410), (3, 7216940), (4, 5412705), (5, 4330164), (6, 3608470), (10, 2165082), (12, 1804235), (15, 1443388), (20, 1082541), (23, 941340), (29, 746580), (30, 721694), (46, 470670), (58, 373290), (60, 360847), (69, 313780), (87, 248860), (92, 235335), (115, 188268), (116, 186645), (138, 156890), (145, 149316), (174, 124430), (230, 94134), (276, 78445), (290, 74658), (345, 62756), (348, 62215), (435, 49772), (460, 47067), (541, 40020), (580, 37329), (667, 32460), (690, 31378), (870, 24886), (1082, 20010), (1334, 16230), (1380, 15689), (1623, 13340), (1740, 12443), (2001, 10820), (2164, 10005), (2668, 8115), (2705, 8004), (3246, 6670), (3335, 6492), (4002, 5410)]