20781678730

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{829}}^1\times {\mathrm{883}}^1$

素因数の和:1903

約数の個数: 64

約数和(自身を含む): 39937847040

約数和(自身を除く): 19156168310

約数列:

[1, 2, 5, 10, 17, 34, 85, 167, 170, 334, 829, 835, 883, 1658, 1670, 1766, 2839, 4145, 4415, 5678, 8290, 8830, 14093, 14195, 15011, 28186, 28390, 30022, 70465, 75055, 138443, 140930, 147461, 150110, 276886, 294922, 692215, 732007, 737305, 1384430, 1464014, 1474610, 2353531, 2506837, 3660035, 4707062, 5013674, 7320070, 11767655, 12444119, 12534185, 23535310, 24888238, 25068370, 62220595, 122245169, 124441190, 244490338, 611225845, 1222451690, 2078167873, 4156335746, 10390839365, 20781678730]

約数ペア:

[(1, 20781678730), (2, 10390839365), (5, 4156335746), (10, 2078167873), (17, 1222451690), (34, 611225845), (85, 244490338), (167, 124441190), (170, 122245169), (334, 62220595), (829, 25068370), (835, 24888238), (883, 23535310), (1658, 12534185), (1670, 12444119), (1766, 11767655), (2839, 7320070), (4145, 5013674), (4415, 4707062), (5678, 3660035), (8290, 2506837), (8830, 2353531), (14093, 1474610), (14195, 1464014), (15011, 1384430), (28186, 737305), (28390, 732007), (30022, 692215), (70465, 294922), (75055, 276886), (138443, 150110), (140930, 147461)]