21364640

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:286

約数の個数: 96

約数和(自身を含む): 56246400

約数和(自身を除く): 34881760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 61, 80, 88, 110, 122, 160, 176, 199, 220, 244, 305, 352, 398, 440, 488, 610, 671, 796, 880, 976, 995, 1220, 1342, 1592, 1760, 1952, 1990, 2189, 2440, 2684, 3184, 3355, 3980, 4378, 4880, 5368, 6368, 6710, 7960, 8756, 9760, 10736, 10945, 12139, 13420, 15920, 17512, 21472, 21890, 24278, 26840, 31840, 35024, 43780, 48556, 53680, 60695, 70048, 87560, 97112, 107360, 121390, 133529, 175120, 194224, 242780, 267058, 350240, 388448, 485560, 534116, 667645, 971120, 1068232, 1335290, 1942240, 2136464, 2670580, 4272928, 5341160, 10682320, 21364640]

約数ペア:

[(1, 21364640), (2, 10682320), (4, 5341160), (5, 4272928), (8, 2670580), (10, 2136464), (11, 1942240), (16, 1335290), (20, 1068232), (22, 971120), (32, 667645), (40, 534116), (44, 485560), (55, 388448), (61, 350240), (80, 267058), (88, 242780), (110, 194224), (122, 175120), (160, 133529), (176, 121390), (199, 107360), (220, 97112), (244, 87560), (305, 70048), (352, 60695), (398, 53680), (440, 48556), (488, 43780), (610, 35024), (671, 31840), (796, 26840), (880, 24278), (976, 21890), (995, 21472), (1220, 17512), (1342, 15920), (1592, 13420), (1760, 12139), (1952, 10945), (1990, 10736), (2189, 9760), (2440, 8756), (2684, 7960), (3184, 6710), (3355, 6368), (3980, 5368), (4378, 4880)]