1388750

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:134

約数の個数: 40

約数和(自身を含む): 2867832

約数和(自身を除く): 1479082

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 101, 110, 125, 202, 250, 275, 505, 550, 625, 1010, 1111, 1250, 1375, 2222, 2525, 2750, 5050, 5555, 6875, 11110, 12625, 13750, 25250, 27775, 55550, 63125, 126250, 138875, 277750, 694375, 1388750]

約数ペア:

[(1, 1388750), (2, 694375), (5, 277750), (10, 138875), (11, 126250), (22, 63125), (25, 55550), (50, 27775), (55, 25250), (101, 13750), (110, 12625), (125, 11110), (202, 6875), (250, 5555), (275, 5050), (505, 2750), (550, 2525), (625, 2222), (1010, 1375), (1111, 1250)]