990959950

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{639329}}^1$

素因数の和:639372

約数の個数: 24

約数和(自身を含む): 1902646080

約数和(自身を除く): 911686130

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 310, 775, 1550, 639329, 1278658, 3196645, 6393290, 15983225, 19819199, 31966450, 39638398, 99095995, 198191990, 495479975, 990959950]

約数ペア:

[(1, 990959950), (2, 495479975), (5, 198191990), (10, 99095995), (25, 39638398), (31, 31966450), (50, 19819199), (62, 15983225), (155, 6393290), (310, 3196645), (775, 1278658), (1550, 639329)]