19669940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1399}}^1$

素因数の和:1464

約数の個数: 48

約数和(自身を含む): 44688000

約数和(自身を除く): 25018060

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 1399, 1406, 2798, 2812, 3515, 5596, 6995, 7030, 13990, 14060, 26581, 27980, 51763, 53162, 103526, 106324, 132905, 207052, 258815, 265810, 517630, 531620, 983497, 1035260, 1966994, 3933988, 4917485, 9834970, 19669940]

約数ペア:

[(1, 19669940), (2, 9834970), (4, 4917485), (5, 3933988), (10, 1966994), (19, 1035260), (20, 983497), (37, 531620), (38, 517630), (74, 265810), (76, 258815), (95, 207052), (148, 132905), (185, 106324), (190, 103526), (370, 53162), (380, 51763), (703, 27980), (740, 26581), (1399, 14060), (1406, 13990), (2798, 7030), (2812, 6995), (3515, 5596)]