18945280

素因数分解:

$2^8\times 5^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1$

素因数の和:100

約数の個数: 108

約数和(自身を含む): 49062132

約数和(自身を除く): 30116852

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 41, 64, 76, 80, 82, 95, 128, 152, 160, 164, 190, 205, 256, 304, 320, 328, 361, 380, 410, 608, 640, 656, 722, 760, 779, 820, 1216, 1280, 1312, 1444, 1520, 1558, 1640, 1805, 2432, 2624, 2888, 3040, 3116, 3280, 3610, 3895, 4864, 5248, 5776, 6080, 6232, 6560, 7220, 7790, 10496, 11552, 12160, 12464, 13120, 14440, 14801, 15580, 23104, 24320, 24928, 26240, 28880, 29602, 31160, 46208, 49856, 52480, 57760, 59204, 62320, 74005, 92416, 99712, 115520, 118408, 124640, 148010, 199424, 231040, 236816, 249280, 296020, 462080, 473632, 498560, 592040, 947264, 997120, 1184080, 1894528, 2368160, 3789056, 4736320, 9472640, 18945280]

約数ペア:

[(1, 18945280), (2, 9472640), (4, 4736320), (5, 3789056), (8, 2368160), (10, 1894528), (16, 1184080), (19, 997120), (20, 947264), (32, 592040), (38, 498560), (40, 473632), (41, 462080), (64, 296020), (76, 249280), (80, 236816), (82, 231040), (95, 199424), (128, 148010), (152, 124640), (160, 118408), (164, 115520), (190, 99712), (205, 92416), (256, 74005), (304, 62320), (320, 59204), (328, 57760), (361, 52480), (380, 49856), (410, 46208), (608, 31160), (640, 29602), (656, 28880), (722, 26240), (760, 24928), (779, 24320), (820, 23104), (1216, 15580), (1280, 14801), (1312, 14440), (1444, 13120), (1520, 12464), (1558, 12160), (1640, 11552), (1805, 10496), (2432, 7790), (2624, 7220), (2888, 6560), (3040, 6232), (3116, 6080), (3280, 5776), (3610, 5248), (3895, 4864)]