19419960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:461

約数の個数: 128

約数和(自身を含む): 67852800

約数和(自身を除く): 48432840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 61, 70, 84, 105, 120, 122, 140, 168, 183, 210, 244, 280, 305, 366, 379, 420, 427, 488, 610, 732, 758, 840, 854, 915, 1137, 1220, 1281, 1464, 1516, 1708, 1830, 1895, 2135, 2274, 2440, 2562, 2653, 3032, 3416, 3660, 3790, 4270, 4548, 5124, 5306, 5685, 6405, 7320, 7580, 7959, 8540, 9096, 10248, 10612, 11370, 12810, 13265, 15160, 15918, 17080, 21224, 22740, 23119, 25620, 26530, 31836, 39795, 45480, 46238, 51240, 53060, 63672, 69357, 79590, 92476, 106120, 115595, 138714, 159180, 161833, 184952, 231190, 277428, 318360, 323666, 346785, 462380, 485499, 554856, 647332, 693570, 809165, 924760, 970998, 1294664, 1387140, 1618330, 1941996, 2427495, 2774280, 3236660, 3883992, 4854990, 6473320, 9709980, 19419960]

約数ペア:

[(1, 19419960), (2, 9709980), (3, 6473320), (4, 4854990), (5, 3883992), (6, 3236660), (7, 2774280), (8, 2427495), (10, 1941996), (12, 1618330), (14, 1387140), (15, 1294664), (20, 970998), (21, 924760), (24, 809165), (28, 693570), (30, 647332), (35, 554856), (40, 485499), (42, 462380), (56, 346785), (60, 323666), (61, 318360), (70, 277428), (84, 231190), (105, 184952), (120, 161833), (122, 159180), (140, 138714), (168, 115595), (183, 106120), (210, 92476), (244, 79590), (280, 69357), (305, 63672), (366, 53060), (379, 51240), (420, 46238), (427, 45480), (488, 39795), (610, 31836), (732, 26530), (758, 25620), (840, 23119), (854, 22740), (915, 21224), (1137, 17080), (1220, 15918), (1281, 15160), (1464, 13265), (1516, 12810), (1708, 11370), (1830, 10612), (1895, 10248), (2135, 9096), (2274, 8540), (2440, 7959), (2562, 7580), (2653, 7320), (3032, 6405), (3416, 5685), (3660, 5306), (3790, 5124), (4270, 4548)]