990147380

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{70423}}^1$

素因数の和:70488

約数の個数: 48

約数和(自身を含む): 2247934080

約数和(自身を除く): 1257786700

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 1406, 2812, 3515, 7030, 14060, 70423, 140846, 281692, 352115, 704230, 1338037, 1408460, 2605651, 2676074, 5211302, 5352148, 6690185, 10422604, 13028255, 13380370, 26056510, 26760740, 49507369, 52113020, 99014738, 198029476, 247536845, 495073690, 990147380]

約数ペア:

[(1, 990147380), (2, 495073690), (4, 247536845), (5, 198029476), (10, 99014738), (19, 52113020), (20, 49507369), (37, 26760740), (38, 26056510), (74, 13380370), (76, 13028255), (95, 10422604), (148, 6690185), (185, 5352148), (190, 5211302), (370, 2676074), (380, 2605651), (703, 1408460), (740, 1338037), (1406, 704230), (2812, 352115), (3515, 281692), (7030, 140846), (14060, 70423)]