397726980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{946969}}^1$

素因数の和:946988

約数の個数: 48

約数和(自身を含む): 1272727680

約数和(自身を除く): 875000700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 946969, 1893938, 2840907, 3787876, 4734845, 5681814, 6628783, 9469690, 11363628, 13257566, 14204535, 18939380, 19886349, 26515132, 28409070, 33143915, 39772698, 56818140, 66287830, 79545396, 99431745, 132575660, 198863490, 397726980]

約数ペア:

[(1, 397726980), (2, 198863490), (3, 132575660), (4, 99431745), (5, 79545396), (6, 66287830), (7, 56818140), (10, 39772698), (12, 33143915), (14, 28409070), (15, 26515132), (20, 19886349), (21, 18939380), (28, 14204535), (30, 13257566), (35, 11363628), (42, 9469690), (60, 6628783), (70, 5681814), (84, 4734845), (105, 3787876), (140, 2840907), (210, 1893938), (420, 946969)]