218738940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{1583}}^1$

素因数の和:1656

約数の個数: 144

約数和(自身を含む): 728082432

約数和(自身を除く): 509343492

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 49, 60, 70, 84, 94, 98, 105, 140, 141, 147, 188, 196, 210, 235, 245, 282, 294, 329, 420, 470, 490, 564, 588, 658, 705, 735, 940, 980, 987, 1316, 1410, 1470, 1583, 1645, 1974, 2303, 2820, 2940, 3166, 3290, 3948, 4606, 4749, 4935, 6332, 6580, 6909, 7915, 9212, 9498, 9870, 11081, 11515, 13818, 15830, 18996, 19740, 22162, 23030, 23745, 27636, 31660, 33243, 34545, 44324, 46060, 47490, 55405, 66486, 69090, 74401, 77567, 94980, 110810, 132972, 138180, 148802, 155134, 166215, 221620, 223203, 232701, 297604, 310268, 332430, 372005, 387835, 446406, 465402, 520807, 664860, 744010, 775670, 892812, 930804, 1041614, 1116015, 1163505, 1488020, 1551340, 1562421, 2083228, 2232030, 2327010, 2604035, 3124842, 3645649, 4464060, 4654020, 5208070, 6249684, 7291298, 7812105, 10416140, 10936947, 14582596, 15624210, 18228245, 21873894, 31248420, 36456490, 43747788, 54684735, 72912980, 109369470, 218738940]

約数ペア:

[(1, 218738940), (2, 109369470), (3, 72912980), (4, 54684735), (5, 43747788), (6, 36456490), (7, 31248420), (10, 21873894), (12, 18228245), (14, 15624210), (15, 14582596), (20, 10936947), (21, 10416140), (28, 7812105), (30, 7291298), (35, 6249684), (42, 5208070), (47, 4654020), (49, 4464060), (60, 3645649), (70, 3124842), (84, 2604035), (94, 2327010), (98, 2232030), (105, 2083228), (140, 1562421), (141, 1551340), (147, 1488020), (188, 1163505), (196, 1116015), (210, 1041614), (235, 930804), (245, 892812), (282, 775670), (294, 744010), (329, 664860), (420, 520807), (470, 465402), (490, 446406), (564, 387835), (588, 372005), (658, 332430), (705, 310268), (735, 297604), (940, 232701), (980, 223203), (987, 221620), (1316, 166215), (1410, 155134), (1470, 148802), (1583, 138180), (1645, 132972), (1974, 110810), (2303, 94980), (2820, 77567), (2940, 74401), (3166, 69090), (3290, 66486), (3948, 55405), (4606, 47490), (4749, 46060), (4935, 44324), (6332, 34545), (6580, 33243), (6909, 31660), (7915, 27636), (9212, 23745), (9498, 23030), (9870, 22162), (11081, 19740), (11515, 18996), (13818, 15830)]