20361920

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:250

約数の個数: 112

約数和(自身を含む): 54315360

約数和(自身を除く): 33953440

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 19, 20, 32, 34, 38, 40, 64, 68, 76, 80, 85, 95, 136, 152, 160, 170, 190, 197, 272, 304, 320, 323, 340, 380, 394, 544, 608, 646, 680, 760, 788, 985, 1088, 1216, 1292, 1360, 1520, 1576, 1615, 1970, 2584, 2720, 3040, 3152, 3230, 3349, 3743, 3940, 5168, 5440, 6080, 6304, 6460, 6698, 7486, 7880, 10336, 12608, 12920, 13396, 14972, 15760, 16745, 18715, 20672, 25840, 26792, 29944, 31520, 33490, 37430, 51680, 53584, 59888, 63040, 63631, 66980, 74860, 103360, 107168, 119776, 127262, 133960, 149720, 214336, 239552, 254524, 267920, 299440, 318155, 509048, 535840, 598880, 636310, 1018096, 1071680, 1197760, 1272620, 2036192, 2545240, 4072384, 5090480, 10180960, 20361920]

約数ペア:

[(1, 20361920), (2, 10180960), (4, 5090480), (5, 4072384), (8, 2545240), (10, 2036192), (16, 1272620), (17, 1197760), (19, 1071680), (20, 1018096), (32, 636310), (34, 598880), (38, 535840), (40, 509048), (64, 318155), (68, 299440), (76, 267920), (80, 254524), (85, 239552), (95, 214336), (136, 149720), (152, 133960), (160, 127262), (170, 119776), (190, 107168), (197, 103360), (272, 74860), (304, 66980), (320, 63631), (323, 63040), (340, 59888), (380, 53584), (394, 51680), (544, 37430), (608, 33490), (646, 31520), (680, 29944), (760, 26792), (788, 25840), (985, 20672), (1088, 18715), (1216, 16745), (1292, 15760), (1360, 14972), (1520, 13396), (1576, 12920), (1615, 12608), (1970, 10336), (2584, 7880), (2720, 7486), (3040, 6698), (3152, 6460), (3230, 6304), (3349, 6080), (3743, 5440), (3940, 5168)]