678246520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{78139}}^1$

素因数の和:78188

約数の個数: 64

約数和(自身を含む): 1800345600

約数和(自身を除く): 1122099080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 78139, 156278, 312556, 390695, 546973, 625112, 781390, 1093946, 1562780, 2187892, 2422309, 2734865, 3125560, 4375784, 4844618, 5469730, 9689236, 10939460, 12111545, 16956163, 19378472, 21878920, 24223090, 33912326, 48446180, 67824652, 84780815, 96892360, 135649304, 169561630, 339123260, 678246520]

約数ペア:

[(1, 678246520), (2, 339123260), (4, 169561630), (5, 135649304), (7, 96892360), (8, 84780815), (10, 67824652), (14, 48446180), (20, 33912326), (28, 24223090), (31, 21878920), (35, 19378472), (40, 16956163), (56, 12111545), (62, 10939460), (70, 9689236), (124, 5469730), (140, 4844618), (155, 4375784), (217, 3125560), (248, 2734865), (280, 2422309), (310, 2187892), (434, 1562780), (620, 1093946), (868, 781390), (1085, 625112), (1240, 546973), (1736, 390695), (2170, 312556), (4340, 156278), (8680, 78139)]