239486540

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1\times {\mathrm{1621}}^1$

素因数の和:1802

約数の個数: 48

約数和(自身を含む): 515017440

約数和(自身を除く): 275530900

約数列:

[1, 2, 4, 5, 10, 20, 83, 89, 166, 178, 332, 356, 415, 445, 830, 890, 1621, 1660, 1780, 3242, 6484, 7387, 8105, 14774, 16210, 29548, 32420, 36935, 73870, 134543, 144269, 147740, 269086, 288538, 538172, 577076, 672715, 721345, 1345430, 1442690, 2690860, 2885380, 11974327, 23948654, 47897308, 59871635, 119743270, 239486540]

約数ペア:

[(1, 239486540), (2, 119743270), (4, 59871635), (5, 47897308), (10, 23948654), (20, 11974327), (83, 2885380), (89, 2690860), (166, 1442690), (178, 1345430), (332, 721345), (356, 672715), (415, 577076), (445, 538172), (830, 288538), (890, 269086), (1621, 147740), (1660, 144269), (1780, 134543), (3242, 73870), (6484, 36935), (7387, 32420), (8105, 29548), (14774, 16210)]