21889140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:262

約数の個数: 192

約数和(自身を含む): 79779840

約数和(自身を除く): 57890700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 19, 20, 21, 26, 28, 30, 35, 38, 39, 42, 52, 57, 60, 65, 70, 76, 78, 84, 91, 95, 105, 114, 130, 133, 140, 156, 182, 190, 195, 210, 211, 228, 247, 260, 266, 273, 285, 364, 380, 390, 399, 420, 422, 455, 494, 532, 546, 570, 633, 665, 741, 780, 798, 844, 910, 988, 1055, 1092, 1140, 1235, 1266, 1330, 1365, 1477, 1482, 1596, 1729, 1820, 1995, 2110, 2470, 2532, 2660, 2730, 2743, 2954, 2964, 3165, 3458, 3705, 3990, 4009, 4220, 4431, 4940, 5187, 5460, 5486, 5908, 6330, 6916, 7385, 7410, 7980, 8018, 8229, 8645, 8862, 10374, 10972, 12027, 12660, 13715, 14770, 14820, 16036, 16458, 17290, 17724, 19201, 20045, 20748, 22155, 24054, 25935, 27430, 28063, 29540, 32916, 34580, 38402, 40090, 41145, 44310, 48108, 51870, 52117, 54860, 56126, 57603, 60135, 76804, 80180, 82290, 84189, 88620, 96005, 103740, 104234, 112252, 115206, 120270, 140315, 156351, 164580, 168378, 192010, 208468, 230412, 240540, 260585, 280630, 288015, 312702, 336756, 364819, 384020, 420945, 521170, 561260, 576030, 625404, 729638, 781755, 841890, 1042340, 1094457, 1152060, 1459276, 1563510, 1683780, 1824095, 2188914, 3127020, 3648190, 4377828, 5472285, 7296380, 10944570, 21889140]

約数ペア:

[(1, 21889140), (2, 10944570), (3, 7296380), (4, 5472285), (5, 4377828), (6, 3648190), (7, 3127020), (10, 2188914), (12, 1824095), (13, 1683780), (14, 1563510), (15, 1459276), (19, 1152060), (20, 1094457), (21, 1042340), (26, 841890), (28, 781755), (30, 729638), (35, 625404), (38, 576030), (39, 561260), (42, 521170), (52, 420945), (57, 384020), (60, 364819), (65, 336756), (70, 312702), (76, 288015), (78, 280630), (84, 260585), (91, 240540), (95, 230412), (105, 208468), (114, 192010), (130, 168378), (133, 164580), (140, 156351), (156, 140315), (182, 120270), (190, 115206), (195, 112252), (210, 104234), (211, 103740), (228, 96005), (247, 88620), (260, 84189), (266, 82290), (273, 80180), (285, 76804), (364, 60135), (380, 57603), (390, 56126), (399, 54860), (420, 52117), (422, 51870), (455, 48108), (494, 44310), (532, 41145), (546, 40090), (570, 38402), (633, 34580), (665, 32916), (741, 29540), (780, 28063), (798, 27430), (844, 25935), (910, 24054), (988, 22155), (1055, 20748), (1092, 20045), (1140, 19201), (1235, 17724), (1266, 17290), (1330, 16458), (1365, 16036), (1477, 14820), (1482, 14770), (1596, 13715), (1729, 12660), (1820, 12027), (1995, 10972), (2110, 10374), (2470, 8862), (2532, 8645), (2660, 8229), (2730, 8018), (2743, 7980), (2954, 7410), (2964, 7385), (3165, 6916), (3458, 6330), (3705, 5908), (3990, 5486), (4009, 5460), (4220, 5187), (4431, 4940)]