66834920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{491}}^1$

素因数の和:626

約数の個数: 64

約数和(自身を含む): 156219840

約数和(自身を除く): 89384920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 83, 164, 166, 205, 328, 332, 410, 415, 491, 664, 820, 830, 982, 1640, 1660, 1964, 2455, 3320, 3403, 3928, 4910, 6806, 9820, 13612, 17015, 19640, 20131, 27224, 34030, 40262, 40753, 68060, 80524, 81506, 100655, 136120, 161048, 163012, 201310, 203765, 326024, 402620, 407530, 805240, 815060, 1630120, 1670873, 3341746, 6683492, 8354365, 13366984, 16708730, 33417460, 66834920]

約数ペア:

[(1, 66834920), (2, 33417460), (4, 16708730), (5, 13366984), (8, 8354365), (10, 6683492), (20, 3341746), (40, 1670873), (41, 1630120), (82, 815060), (83, 805240), (164, 407530), (166, 402620), (205, 326024), (328, 203765), (332, 201310), (410, 163012), (415, 161048), (491, 136120), (664, 100655), (820, 81506), (830, 80524), (982, 68060), (1640, 40753), (1660, 40262), (1964, 34030), (2455, 27224), (3320, 20131), (3403, 19640), (3928, 17015), (4910, 13612), (6806, 9820)]