31220720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{12589}}^1$

素因数の和:12633

約数の個数: 40

約数和(自身を含む): 74935680

約数和(自身を除く): 43714960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 12589, 25178, 50356, 62945, 100712, 125890, 201424, 251780, 390259, 503560, 780518, 1007120, 1561036, 1951295, 3122072, 3902590, 6244144, 7805180, 15610360, 31220720]

約数ペア:

[(1, 31220720), (2, 15610360), (4, 7805180), (5, 6244144), (8, 3902590), (10, 3122072), (16, 1951295), (20, 1561036), (31, 1007120), (40, 780518), (62, 503560), (80, 390259), (124, 251780), (155, 201424), (248, 125890), (310, 100712), (496, 62945), (620, 50356), (1240, 25178), (2480, 12589)]