78400240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{313}}^1$

素因数の和:458

約数の個数: 80

約数和(自身を含む): 190630656

約数和(自身を除く): 112230416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 101, 124, 155, 202, 248, 310, 313, 404, 496, 505, 620, 626, 808, 1010, 1240, 1252, 1565, 1616, 2020, 2480, 2504, 3130, 3131, 4040, 5008, 6260, 6262, 8080, 9703, 12520, 12524, 15655, 19406, 25040, 25048, 31310, 31613, 38812, 48515, 50096, 62620, 63226, 77624, 97030, 125240, 126452, 155248, 158065, 194060, 250480, 252904, 316130, 388120, 505808, 632260, 776240, 980003, 1264520, 1960006, 2529040, 3920012, 4900015, 7840024, 9800030, 15680048, 19600060, 39200120, 78400240]

約数ペア:

[(1, 78400240), (2, 39200120), (4, 19600060), (5, 15680048), (8, 9800030), (10, 7840024), (16, 4900015), (20, 3920012), (31, 2529040), (40, 1960006), (62, 1264520), (80, 980003), (101, 776240), (124, 632260), (155, 505808), (202, 388120), (248, 316130), (310, 252904), (313, 250480), (404, 194060), (496, 158065), (505, 155248), (620, 126452), (626, 125240), (808, 97030), (1010, 77624), (1240, 63226), (1252, 62620), (1565, 50096), (1616, 48515), (2020, 38812), (2480, 31613), (2504, 31310), (3130, 25048), (3131, 25040), (4040, 19406), (5008, 15655), (6260, 12524), (6262, 12520), (8080, 9703)]