20172848860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{17597}}^1$

素因数の和:17723

約数の個数: 72

約数和(自身を含む): 44772690816

約数和(自身を除く): 24599841956

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 124, 155, 172, 215, 310, 430, 620, 860, 1333, 1849, 2666, 3698, 5332, 6665, 7396, 9245, 13330, 17597, 18490, 26660, 35194, 36980, 57319, 70388, 87985, 114638, 175970, 229276, 286595, 351940, 545507, 573190, 756671, 1091014, 1146380, 1513342, 2182028, 2727535, 3026684, 3783355, 5455070, 7566710, 10910140, 15133420, 23456801, 32536853, 46913602, 65073706, 93827204, 117284005, 130147412, 162684265, 234568010, 325368530, 469136020, 650737060, 1008642443, 2017284886, 4034569772, 5043212215, 10086424430, 20172848860]

約数ペア:

[(1, 20172848860), (2, 10086424430), (4, 5043212215), (5, 4034569772), (10, 2017284886), (20, 1008642443), (31, 650737060), (43, 469136020), (62, 325368530), (86, 234568010), (124, 162684265), (155, 130147412), (172, 117284005), (215, 93827204), (310, 65073706), (430, 46913602), (620, 32536853), (860, 23456801), (1333, 15133420), (1849, 10910140), (2666, 7566710), (3698, 5455070), (5332, 3783355), (6665, 3026684), (7396, 2727535), (9245, 2182028), (13330, 1513342), (17597, 1146380), (18490, 1091014), (26660, 756671), (35194, 573190), (36980, 545507), (57319, 351940), (70388, 286595), (87985, 229276), (114638, 175970)]