212815160

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 487555200

約数和(自身を除く): 274740040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 197, 226, 239, 394, 452, 478, 565, 788, 904, 956, 985, 1130, 1195, 1576, 1912, 1970, 2260, 2390, 3940, 4520, 4780, 7880, 9560, 22261, 27007, 44522, 47083, 54014, 89044, 94166, 108028, 111305, 135035, 178088, 188332, 216056, 222610, 235415, 270070, 376664, 445220, 470830, 540140, 890440, 941660, 1080280, 1883320, 5320379, 10640758, 21281516, 26601895, 42563032, 53203790, 106407580, 212815160]

約数ペア:

[(1, 212815160), (2, 106407580), (4, 53203790), (5, 42563032), (8, 26601895), (10, 21281516), (20, 10640758), (40, 5320379), (113, 1883320), (197, 1080280), (226, 941660), (239, 890440), (394, 540140), (452, 470830), (478, 445220), (565, 376664), (788, 270070), (904, 235415), (956, 222610), (985, 216056), (1130, 188332), (1195, 178088), (1576, 135035), (1912, 111305), (1970, 108028), (2260, 94166), (2390, 89044), (3940, 54014), (4520, 47083), (4780, 44522), (7880, 27007), (9560, 22261)]