18004940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{839}}^1$

素因数の和:914

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 22214260

約数列:

[1, 2, 4, 5, 10, 20, 29, 37, 58, 74, 116, 145, 148, 185, 290, 370, 580, 740, 839, 1073, 1678, 2146, 3356, 4195, 4292, 5365, 8390, 10730, 16780, 21460, 24331, 31043, 48662, 62086, 97324, 121655, 124172, 155215, 243310, 310430, 486620, 620860, 900247, 1800494, 3600988, 4501235, 9002470, 18004940]

約数ペア:

[(1, 18004940), (2, 9002470), (4, 4501235), (5, 3600988), (10, 1800494), (20, 900247), (29, 620860), (37, 486620), (58, 310430), (74, 243310), (116, 155215), (145, 124172), (148, 121655), (185, 97324), (290, 62086), (370, 48662), (580, 31043), (740, 24331), (839, 21460), (1073, 16780), (1678, 10730), (2146, 8390), (3356, 5365), (4195, 4292)]