21519792

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{577}}^1$

素因数の和:635

約数の個数: 120

約数和(自身を含む): 70811936

約数和(自身を除く): 49292144

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 37, 42, 48, 56, 63, 72, 74, 84, 111, 112, 126, 144, 148, 168, 222, 252, 259, 296, 333, 336, 444, 504, 518, 577, 592, 666, 777, 888, 1008, 1036, 1154, 1332, 1554, 1731, 1776, 2072, 2308, 2331, 2664, 3108, 3462, 4039, 4144, 4616, 4662, 5193, 5328, 6216, 6924, 8078, 9232, 9324, 10386, 12117, 12432, 13848, 16156, 18648, 20772, 21349, 24234, 27696, 32312, 36351, 37296, 41544, 42698, 48468, 64047, 64624, 72702, 83088, 85396, 96936, 128094, 145404, 149443, 170792, 192141, 193872, 256188, 290808, 298886, 341584, 384282, 448329, 512376, 581616, 597772, 768564, 896658, 1024752, 1195544, 1344987, 1537128, 1793316, 2391088, 2689974, 3074256, 3586632, 5379948, 7173264, 10759896, 21519792]

約数ペア:

[(1, 21519792), (2, 10759896), (3, 7173264), (4, 5379948), (6, 3586632), (7, 3074256), (8, 2689974), (9, 2391088), (12, 1793316), (14, 1537128), (16, 1344987), (18, 1195544), (21, 1024752), (24, 896658), (28, 768564), (36, 597772), (37, 581616), (42, 512376), (48, 448329), (56, 384282), (63, 341584), (72, 298886), (74, 290808), (84, 256188), (111, 193872), (112, 192141), (126, 170792), (144, 149443), (148, 145404), (168, 128094), (222, 96936), (252, 85396), (259, 83088), (296, 72702), (333, 64624), (336, 64047), (444, 48468), (504, 42698), (518, 41544), (577, 37296), (592, 36351), (666, 32312), (777, 27696), (888, 24234), (1008, 21349), (1036, 20772), (1154, 18648), (1332, 16156), (1554, 13848), (1731, 12432), (1776, 12117), (2072, 10386), (2308, 9324), (2331, 9232), (2664, 8078), (3108, 6924), (3462, 6216), (4039, 5328), (4144, 5193), (4616, 4662)]