21706740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{577}}^1$

素因数の和:622

約数の個数: 144

約数和(自身を含む): 75741120

約数和(自身を除く): 54034380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 19, 20, 22, 30, 33, 36, 38, 44, 45, 55, 57, 60, 66, 76, 90, 95, 99, 110, 114, 132, 165, 171, 180, 190, 198, 209, 220, 228, 285, 330, 342, 380, 396, 418, 495, 570, 577, 627, 660, 684, 836, 855, 990, 1045, 1140, 1154, 1254, 1710, 1731, 1881, 1980, 2090, 2308, 2508, 2885, 3135, 3420, 3462, 3762, 4180, 5193, 5770, 6270, 6347, 6924, 7524, 8655, 9405, 10386, 10963, 11540, 12540, 12694, 17310, 18810, 19041, 20772, 21926, 25388, 25965, 31735, 32889, 34620, 37620, 38082, 43852, 51930, 54815, 57123, 63470, 65778, 76164, 95205, 98667, 103860, 109630, 114246, 120593, 126940, 131556, 164445, 190410, 197334, 219260, 228492, 241186, 285615, 328890, 361779, 380820, 394668, 482372, 493335, 571230, 602965, 657780, 723558, 986670, 1085337, 1142460, 1205930, 1447116, 1808895, 1973340, 2170674, 2411860, 3617790, 4341348, 5426685, 7235580, 10853370, 21706740]

約数ペア:

[(1, 21706740), (2, 10853370), (3, 7235580), (4, 5426685), (5, 4341348), (6, 3617790), (9, 2411860), (10, 2170674), (11, 1973340), (12, 1808895), (15, 1447116), (18, 1205930), (19, 1142460), (20, 1085337), (22, 986670), (30, 723558), (33, 657780), (36, 602965), (38, 571230), (44, 493335), (45, 482372), (55, 394668), (57, 380820), (60, 361779), (66, 328890), (76, 285615), (90, 241186), (95, 228492), (99, 219260), (110, 197334), (114, 190410), (132, 164445), (165, 131556), (171, 126940), (180, 120593), (190, 114246), (198, 109630), (209, 103860), (220, 98667), (228, 95205), (285, 76164), (330, 65778), (342, 63470), (380, 57123), (396, 54815), (418, 51930), (495, 43852), (570, 38082), (577, 37620), (627, 34620), (660, 32889), (684, 31735), (836, 25965), (855, 25388), (990, 21926), (1045, 20772), (1140, 19041), (1154, 18810), (1254, 17310), (1710, 12694), (1731, 12540), (1881, 11540), (1980, 10963), (2090, 10386), (2308, 9405), (2508, 8655), (2885, 7524), (3135, 6924), (3420, 6347), (3462, 6270), (3762, 5770), (4180, 5193)]