21376824

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:253

約数の個数: 128

約数和(自身を含む): 66393600

約数和(自身を除く): 45016776

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 19, 21, 24, 28, 37, 38, 42, 56, 57, 74, 76, 84, 111, 114, 133, 148, 152, 168, 181, 222, 228, 259, 266, 296, 362, 399, 444, 456, 518, 532, 543, 703, 724, 777, 798, 888, 1036, 1064, 1086, 1267, 1406, 1448, 1554, 1596, 2072, 2109, 2172, 2534, 2812, 3108, 3192, 3439, 3801, 4218, 4344, 4921, 5068, 5624, 6216, 6697, 6878, 7602, 8436, 9842, 10136, 10317, 13394, 13756, 14763, 15204, 16872, 19684, 20091, 20634, 24073, 26788, 27512, 29526, 30408, 39368, 40182, 41268, 46879, 48146, 53576, 59052, 72219, 80364, 82536, 93758, 96292, 118104, 127243, 140637, 144438, 160728, 187516, 192584, 254486, 281274, 288876, 375032, 381729, 508972, 562548, 577752, 763458, 890701, 1017944, 1125096, 1526916, 1781402, 2672103, 3053832, 3562804, 5344206, 7125608, 10688412, 21376824]

約数ペア:

[(1, 21376824), (2, 10688412), (3, 7125608), (4, 5344206), (6, 3562804), (7, 3053832), (8, 2672103), (12, 1781402), (14, 1526916), (19, 1125096), (21, 1017944), (24, 890701), (28, 763458), (37, 577752), (38, 562548), (42, 508972), (56, 381729), (57, 375032), (74, 288876), (76, 281274), (84, 254486), (111, 192584), (114, 187516), (133, 160728), (148, 144438), (152, 140637), (168, 127243), (181, 118104), (222, 96292), (228, 93758), (259, 82536), (266, 80364), (296, 72219), (362, 59052), (399, 53576), (444, 48146), (456, 46879), (518, 41268), (532, 40182), (543, 39368), (703, 30408), (724, 29526), (777, 27512), (798, 26788), (888, 24073), (1036, 20634), (1064, 20091), (1086, 19684), (1267, 16872), (1406, 15204), (1448, 14763), (1554, 13756), (1596, 13394), (2072, 10317), (2109, 10136), (2172, 9842), (2534, 8436), (2812, 7602), (3108, 6878), (3192, 6697), (3439, 6216), (3801, 5624), (4218, 5068), (4344, 4921)]