71666360

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:632

約数の個数: 64

約数和(自身を含む): 167378400

約数和(自身を除く): 95712040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 89, 164, 178, 205, 328, 356, 410, 445, 491, 712, 820, 890, 982, 1640, 1780, 1964, 2455, 3560, 3649, 3928, 4910, 7298, 9820, 14596, 18245, 19640, 20131, 29192, 36490, 40262, 43699, 72980, 80524, 87398, 100655, 145960, 161048, 174796, 201310, 218495, 349592, 402620, 436990, 805240, 873980, 1747960, 1791659, 3583318, 7166636, 8958295, 14333272, 17916590, 35833180, 71666360]

約数ペア:

[(1, 71666360), (2, 35833180), (4, 17916590), (5, 14333272), (8, 8958295), (10, 7166636), (20, 3583318), (40, 1791659), (41, 1747960), (82, 873980), (89, 805240), (164, 436990), (178, 402620), (205, 349592), (328, 218495), (356, 201310), (410, 174796), (445, 161048), (491, 145960), (712, 100655), (820, 87398), (890, 80524), (982, 72980), (1640, 43699), (1780, 40262), (1964, 36490), (2455, 29192), (3560, 20131), (3649, 19640), (3928, 18245), (4910, 14596), (7298, 9820)]