21076680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:199

約数の個数: 128

約数和(自身を含む): 66977280

約数和(自身を除く): 45900600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 47, 60, 74, 94, 101, 111, 120, 141, 148, 185, 188, 202, 222, 235, 282, 296, 303, 370, 376, 404, 444, 470, 505, 555, 564, 606, 705, 740, 808, 888, 940, 1010, 1110, 1128, 1212, 1410, 1480, 1515, 1739, 1880, 2020, 2220, 2424, 2820, 3030, 3478, 3737, 4040, 4440, 4747, 5217, 5640, 6060, 6956, 7474, 8695, 9494, 10434, 11211, 12120, 13912, 14241, 14948, 17390, 18685, 18988, 20868, 22422, 23735, 26085, 28482, 29896, 34780, 37370, 37976, 41736, 44844, 47470, 52170, 56055, 56964, 69560, 71205, 74740, 89688, 94940, 104340, 112110, 113928, 142410, 149480, 175639, 189880, 208680, 224220, 284820, 351278, 448440, 526917, 569640, 702556, 878195, 1053834, 1405112, 1756390, 2107668, 2634585, 3512780, 4215336, 5269170, 7025560, 10538340, 21076680]

約数ペア:

[(1, 21076680), (2, 10538340), (3, 7025560), (4, 5269170), (5, 4215336), (6, 3512780), (8, 2634585), (10, 2107668), (12, 1756390), (15, 1405112), (20, 1053834), (24, 878195), (30, 702556), (37, 569640), (40, 526917), (47, 448440), (60, 351278), (74, 284820), (94, 224220), (101, 208680), (111, 189880), (120, 175639), (141, 149480), (148, 142410), (185, 113928), (188, 112110), (202, 104340), (222, 94940), (235, 89688), (282, 74740), (296, 71205), (303, 69560), (370, 56964), (376, 56055), (404, 52170), (444, 47470), (470, 44844), (505, 41736), (555, 37976), (564, 37370), (606, 34780), (705, 29896), (740, 28482), (808, 26085), (888, 23735), (940, 22422), (1010, 20868), (1110, 18988), (1128, 18685), (1212, 17390), (1410, 14948), (1480, 14241), (1515, 13912), (1739, 12120), (1880, 11211), (2020, 10434), (2220, 9494), (2424, 8695), (2820, 7474), (3030, 6956), (3478, 6060), (3737, 5640), (4040, 5217), (4440, 4747)]