80998970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 164505600

約数和(自身を除く): 83506630

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 101, 130, 155, 199, 202, 310, 398, 403, 505, 806, 995, 1010, 1313, 1990, 2015, 2587, 2626, 3131, 4030, 5174, 6169, 6262, 6565, 12338, 12935, 13130, 15655, 20099, 25870, 30845, 31310, 40198, 40703, 61690, 80197, 81406, 100495, 160394, 200990, 203515, 261287, 400985, 407030, 522574, 623069, 801970, 1246138, 1306435, 2612870, 3115345, 6230690, 8099897, 16199794, 40499485, 80998970]

約数ペア:

[(1, 80998970), (2, 40499485), (5, 16199794), (10, 8099897), (13, 6230690), (26, 3115345), (31, 2612870), (62, 1306435), (65, 1246138), (101, 801970), (130, 623069), (155, 522574), (199, 407030), (202, 400985), (310, 261287), (398, 203515), (403, 200990), (505, 160394), (806, 100495), (995, 81406), (1010, 80197), (1313, 61690), (1990, 40703), (2015, 40198), (2587, 31310), (2626, 30845), (3131, 25870), (4030, 20099), (5174, 15655), (6169, 13130), (6262, 12935), (6565, 12338)]