1389366140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{20743}}^1$

素因数の和:20966

約数の個数: 48

約数和(自身を含む): 3105127872

約数和(自身を除く): 1715761732

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 197, 340, 394, 788, 985, 1970, 3349, 3940, 6698, 13396, 16745, 20743, 33490, 41486, 66980, 82972, 103715, 207430, 352631, 414860, 705262, 1410524, 1763155, 3526310, 4086371, 7052620, 8172742, 16345484, 20431855, 40863710, 69468307, 81727420, 138936614, 277873228, 347341535, 694683070, 1389366140]

約数ペア:

[(1, 1389366140), (2, 694683070), (4, 347341535), (5, 277873228), (10, 138936614), (17, 81727420), (20, 69468307), (34, 40863710), (68, 20431855), (85, 16345484), (170, 8172742), (197, 7052620), (340, 4086371), (394, 3526310), (788, 1763155), (985, 1410524), (1970, 705262), (3349, 414860), (3940, 352631), (6698, 207430), (13396, 103715), (16745, 82972), (20743, 66980), (33490, 41486)]