19998160

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:141

約数の個数: 160

約数和(自身を含む): 59496192

約数和(自身を除く): 39498032

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 41, 52, 56, 65, 67, 70, 80, 82, 91, 104, 112, 130, 134, 140, 164, 182, 205, 208, 260, 268, 280, 287, 328, 335, 364, 410, 455, 469, 520, 533, 536, 560, 574, 656, 670, 728, 820, 871, 910, 938, 1040, 1066, 1072, 1148, 1340, 1435, 1456, 1640, 1742, 1820, 1876, 2132, 2296, 2345, 2665, 2680, 2747, 2870, 3280, 3484, 3640, 3731, 3752, 4264, 4355, 4592, 4690, 5330, 5360, 5494, 5740, 6097, 6968, 7280, 7462, 7504, 8528, 8710, 9380, 10660, 10988, 11480, 12194, 13735, 13936, 14924, 17420, 18655, 18760, 19229, 21320, 21976, 22960, 24388, 27470, 29848, 30485, 34840, 35711, 37310, 37520, 38458, 42640, 43952, 48776, 54940, 59696, 60970, 69680, 71422, 74620, 76916, 96145, 97552, 109880, 121940, 142844, 149240, 153832, 178555, 192290, 219760, 243880, 249977, 285688, 298480, 307664, 357110, 384580, 487760, 499954, 571376, 714220, 769160, 999908, 1249885, 1428440, 1538320, 1999816, 2499770, 2856880, 3999632, 4999540, 9999080, 19998160]

約数ペア:

[(1, 19998160), (2, 9999080), (4, 4999540), (5, 3999632), (7, 2856880), (8, 2499770), (10, 1999816), (13, 1538320), (14, 1428440), (16, 1249885), (20, 999908), (26, 769160), (28, 714220), (35, 571376), (40, 499954), (41, 487760), (52, 384580), (56, 357110), (65, 307664), (67, 298480), (70, 285688), (80, 249977), (82, 243880), (91, 219760), (104, 192290), (112, 178555), (130, 153832), (134, 149240), (140, 142844), (164, 121940), (182, 109880), (205, 97552), (208, 96145), (260, 76916), (268, 74620), (280, 71422), (287, 69680), (328, 60970), (335, 59696), (364, 54940), (410, 48776), (455, 43952), (469, 42640), (520, 38458), (533, 37520), (536, 37310), (560, 35711), (574, 34840), (656, 30485), (670, 29848), (728, 27470), (820, 24388), (871, 22960), (910, 21976), (938, 21320), (1040, 19229), (1066, 18760), (1072, 18655), (1148, 17420), (1340, 14924), (1435, 13936), (1456, 13735), (1640, 12194), (1742, 11480), (1820, 10988), (1876, 10660), (2132, 9380), (2296, 8710), (2345, 8528), (2665, 7504), (2680, 7462), (2747, 7280), (2870, 6968), (3280, 6097), (3484, 5740), (3640, 5494), (3731, 5360), (3752, 5330), (4264, 4690), (4355, 4592)]