19315780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4621}}^1$

素因数の和:4660

約数の個数: 48

約数和(自身を含む): 46589760

約数和(自身を除く): 27273980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4621, 9242, 18484, 23105, 46210, 50831, 87799, 92420, 101662, 175598, 203324, 254155, 351196, 438995, 508310, 877990, 965789, 1016620, 1755980, 1931578, 3863156, 4828945, 9657890, 19315780]

約数ペア:

[(1, 19315780), (2, 9657890), (4, 4828945), (5, 3863156), (10, 1931578), (11, 1755980), (19, 1016620), (20, 965789), (22, 877990), (38, 508310), (44, 438995), (55, 351196), (76, 254155), (95, 203324), (110, 175598), (190, 101662), (209, 92420), (220, 87799), (380, 50831), (418, 46210), (836, 23105), (1045, 18484), (2090, 9242), (4180, 4621)]