20316660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^2$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 71180928

約数和(自身を除く): 50864268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 61, 65, 70, 78, 84, 91, 105, 122, 130, 140, 156, 182, 183, 195, 210, 244, 260, 273, 305, 364, 366, 390, 420, 427, 455, 546, 610, 732, 780, 793, 854, 910, 915, 1092, 1220, 1281, 1365, 1586, 1708, 1820, 1830, 2135, 2379, 2562, 2730, 3172, 3660, 3721, 3965, 4270, 4758, 5124, 5460, 5551, 6405, 7442, 7930, 8540, 9516, 11102, 11163, 11895, 12810, 14884, 15860, 16653, 18605, 22204, 22326, 23790, 25620, 26047, 27755, 33306, 37210, 44652, 47580, 48373, 52094, 55510, 55815, 66612, 74420, 78141, 83265, 96746, 104188, 111020, 111630, 130235, 145119, 156282, 166530, 193492, 223260, 241865, 260470, 290238, 312564, 333060, 338611, 390705, 483730, 520940, 580476, 677222, 725595, 781410, 967460, 1015833, 1354444, 1451190, 1562820, 1693055, 2031666, 2902380, 3386110, 4063332, 5079165, 6772220, 10158330, 20316660]

約数ペア:

[(1, 20316660), (2, 10158330), (3, 6772220), (4, 5079165), (5, 4063332), (6, 3386110), (7, 2902380), (10, 2031666), (12, 1693055), (13, 1562820), (14, 1451190), (15, 1354444), (20, 1015833), (21, 967460), (26, 781410), (28, 725595), (30, 677222), (35, 580476), (39, 520940), (42, 483730), (52, 390705), (60, 338611), (61, 333060), (65, 312564), (70, 290238), (78, 260470), (84, 241865), (91, 223260), (105, 193492), (122, 166530), (130, 156282), (140, 145119), (156, 130235), (182, 111630), (183, 111020), (195, 104188), (210, 96746), (244, 83265), (260, 78141), (273, 74420), (305, 66612), (364, 55815), (366, 55510), (390, 52094), (420, 48373), (427, 47580), (455, 44652), (546, 37210), (610, 33306), (732, 27755), (780, 26047), (793, 25620), (854, 23790), (910, 22326), (915, 22204), (1092, 18605), (1220, 16653), (1281, 15860), (1365, 14884), (1586, 12810), (1708, 11895), (1820, 11163), (1830, 11102), (2135, 9516), (2379, 8540), (2562, 7930), (2730, 7442), (3172, 6405), (3660, 5551), (3721, 5460), (3965, 5124), (4270, 4758)]