387205180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^2$

素因数の和:331

約数の個数: 72

約数和(自身を含む): 873709200

約数和(自身を除く): 486504020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 89, 95, 107, 178, 190, 214, 356, 380, 428, 445, 535, 890, 1070, 1691, 1780, 2033, 2140, 3382, 4066, 6764, 8132, 8455, 9523, 10165, 11449, 16910, 19046, 20330, 22898, 33820, 38092, 40660, 45796, 47615, 57245, 95230, 114490, 180937, 190460, 217531, 228980, 361874, 435062, 723748, 870124, 904685, 1018961, 1087655, 1809370, 2037922, 2175310, 3618740, 4075844, 4350620, 5094805, 10189610, 19360259, 20379220, 38720518, 77441036, 96801295, 193602590, 387205180]

約数ペア:

[(1, 387205180), (2, 193602590), (4, 96801295), (5, 77441036), (10, 38720518), (19, 20379220), (20, 19360259), (38, 10189610), (76, 5094805), (89, 4350620), (95, 4075844), (107, 3618740), (178, 2175310), (190, 2037922), (214, 1809370), (356, 1087655), (380, 1018961), (428, 904685), (445, 870124), (535, 723748), (890, 435062), (1070, 361874), (1691, 228980), (1780, 217531), (2033, 190460), (2140, 180937), (3382, 114490), (4066, 95230), (6764, 57245), (8132, 47615), (8455, 45796), (9523, 40660), (10165, 38092), (11449, 33820), (16910, 22898), (19046, 20330)]