1628120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:156

約数の個数: 64

約数和(自身を含む): 4112640

約数和(自身を除く): 2484520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 101, 104, 124, 130, 155, 202, 248, 260, 310, 403, 404, 505, 520, 620, 806, 808, 1010, 1240, 1313, 1612, 2015, 2020, 2626, 3131, 3224, 4030, 4040, 5252, 6262, 6565, 8060, 10504, 12524, 13130, 15655, 16120, 25048, 26260, 31310, 40703, 52520, 62620, 81406, 125240, 162812, 203515, 325624, 407030, 814060, 1628120]

約数ペア:

[(1, 1628120), (2, 814060), (4, 407030), (5, 325624), (8, 203515), (10, 162812), (13, 125240), (20, 81406), (26, 62620), (31, 52520), (40, 40703), (52, 31310), (62, 26260), (65, 25048), (101, 16120), (104, 15655), (124, 13130), (130, 12524), (155, 10504), (202, 8060), (248, 6565), (260, 6262), (310, 5252), (403, 4040), (404, 4030), (505, 3224), (520, 3131), (620, 2626), (806, 2020), (808, 2015), (1010, 1612), (1240, 1313)]