20421189360

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:159

約数の個数: 1080

約数和(自身を含む): 87100518960

約数和(自身を除く): 66679329600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 15, 16, 18, 19, 20, 22, 24, 26, 30, 33, 36, 38, 39, 40, 44, 45, 48, 52, 55, 57, 60, 65, 66, 72, 73, 76, 78, 80, 88, 90, 95, 99, 104, 110, 114, 117, 120, 121, 130, 132, 143, 144, 146, 152, 156, 165, 169, 171, 176, 180, 190, 195, 198, 208, 209, 219, 220, 228, 234, 240, 242, 247, 260, 264, 285, 286, 292, 304, 312, 330, 338, 342, 360, 363, 365, 380, 390, 396, 418, 429, 438, 440, 456, 468, 484, 494, 495, 507, 520, 528, 570, 572, 584, 585, 605, 624, 627, 657, 660, 676, 684, 715, 720, 726, 730, 741, 760, 780, 792, 803, 836, 845, 855, 858, 876, 880, 912, 936, 949, 968, 988, 990, 1014, 1040, 1045, 1089, 1095, 1140, 1144, 1168, 1170, 1210, 1235, 1254, 1287, 1314, 1320, 1352, 1368, 1387, 1430, 1452, 1460, 1482, 1520, 1521, 1560, 1573, 1584, 1606, 1672, 1690, 1710, 1716, 1752, 1815, 1859, 1872, 1881, 1898, 1936, 1976, 1980, 2028, 2090, 2145, 2178, 2190, 2223, 2280, 2288, 2299, 2340, 2409, 2420, 2470, 2508, 2535, 2574, 2628, 2640, 2704, 2717, 2736, 2774, 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約数ペア:

[(1, 20421189360), (2, 10210594680), (3, 6807063120), (4, 5105297340), (5, 4084237872), (6, 3403531560), (8, 2552648670), (9, 2269021040), (10, 2042118936), (11, 1856471760), (12, 1701765780), (13, 1570860720), (15, 1361412624), (16, 1276324335), (18, 1134510520), (19, 1074799440), (20, 1021059468), (22, 928235880), (24, 850882890), (26, 785430360), (30, 680706312), (33, 618823920), (36, 567255260), (38, 537399720), (39, 523620240), (40, 510529734), (44, 464117940), (45, 453804208), (48, 425441445), (52, 392715180), (55, 371294352), (57, 358266480), (60, 340353156), (65, 314172144), (66, 309411960), (72, 283627630), (73, 279742320), (76, 268699860), (78, 261810120), (80, 255264867), (88, 232058970), (90, 226902104), (95, 214959888), (99, 206274640), (104, 196357590), (110, 185647176), (114, 179133240), (117, 174540080), (120, 170176578), (121, 168770160), (130, 157086072), (132, 154705980), (143, 142805520), (144, 141813815), (146, 139871160), (152, 134349930), (156, 130905060), (165, 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