40639180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 92836800

約数和(自身を除く): 52197620

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 79, 85, 89, 158, 170, 178, 289, 316, 340, 356, 395, 445, 578, 790, 890, 1156, 1343, 1445, 1513, 1580, 1780, 2686, 2890, 3026, 5372, 5780, 6052, 6715, 7031, 7565, 13430, 14062, 15130, 22831, 25721, 26860, 28124, 30260, 35155, 45662, 51442, 70310, 91324, 102884, 114155, 119527, 128605, 140620, 228310, 239054, 257210, 456620, 478108, 514420, 597635, 1195270, 2031959, 2390540, 4063918, 8127836, 10159795, 20319590, 40639180]

約数ペア:

[(1, 40639180), (2, 20319590), (4, 10159795), (5, 8127836), (10, 4063918), (17, 2390540), (20, 2031959), (34, 1195270), (68, 597635), (79, 514420), (85, 478108), (89, 456620), (158, 257210), (170, 239054), (178, 228310), (289, 140620), (316, 128605), (340, 119527), (356, 114155), (395, 102884), (445, 91324), (578, 70310), (790, 51442), (890, 45662), (1156, 35155), (1343, 30260), (1445, 28124), (1513, 26860), (1580, 25721), (1780, 22831), (2686, 15130), (2890, 14062), (3026, 13430), (5372, 7565), (5780, 7031), (6052, 6715)]