18005540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{967}}^1$

素因数の和:1009

約数の個数: 72

約数和(自身を含む): 46347840

約数和(自身を除く): 28342300

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 49, 70, 76, 95, 98, 133, 140, 190, 196, 245, 266, 380, 490, 532, 665, 931, 967, 980, 1330, 1862, 1934, 2660, 3724, 3868, 4655, 4835, 6769, 9310, 9670, 13538, 18373, 18620, 19340, 27076, 33845, 36746, 47383, 67690, 73492, 91865, 94766, 128611, 135380, 183730, 189532, 236915, 257222, 367460, 473830, 514444, 643055, 900277, 947660, 1286110, 1800554, 2572220, 3601108, 4501385, 9002770, 18005540]

約数ペア:

[(1, 18005540), (2, 9002770), (4, 4501385), (5, 3601108), (7, 2572220), (10, 1800554), (14, 1286110), (19, 947660), (20, 900277), (28, 643055), (35, 514444), (38, 473830), (49, 367460), (70, 257222), (76, 236915), (95, 189532), (98, 183730), (133, 135380), (140, 128611), (190, 94766), (196, 91865), (245, 73492), (266, 67690), (380, 47383), (490, 36746), (532, 33845), (665, 27076), (931, 19340), (967, 18620), (980, 18373), (1330, 13538), (1862, 9670), (1934, 9310), (2660, 6769), (3724, 4835), (3868, 4655)]