78869840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{140839}}^1$

素因数の和:140859

約数の個数: 40

約数和(自身を含む): 209569920

約数和(自身を除く): 130700080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 140839, 281678, 563356, 704195, 985873, 1126712, 1408390, 1971746, 2253424, 2816780, 3943492, 4929365, 5633560, 7886984, 9858730, 11267120, 15773968, 19717460, 39434920, 78869840]

約数ペア:

[(1, 78869840), (2, 39434920), (4, 19717460), (5, 15773968), (7, 11267120), (8, 9858730), (10, 7886984), (14, 5633560), (16, 4929365), (20, 3943492), (28, 2816780), (35, 2253424), (40, 1971746), (56, 1408390), (70, 1126712), (80, 985873), (112, 704195), (140, 563356), (280, 281678), (560, 140839)]