20201984

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1$

素因数の和:257

約数の個数: 80

約数和(自身を含む): 46845216

約数和(自身を除く): 26643232

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 32, 34, 44, 64, 68, 88, 128, 136, 176, 187, 211, 256, 272, 352, 374, 422, 512, 544, 704, 748, 844, 1088, 1408, 1496, 1688, 2176, 2321, 2816, 2992, 3376, 3587, 4352, 4642, 5632, 5984, 6752, 7174, 8704, 9284, 11968, 13504, 14348, 18568, 23936, 27008, 28696, 37136, 39457, 47872, 54016, 57392, 74272, 78914, 95744, 108032, 114784, 148544, 157828, 229568, 297088, 315656, 459136, 594176, 631312, 918272, 1188352, 1262624, 1836544, 2525248, 5050496, 10100992, 20201984]

約数ペア:

[(1, 20201984), (2, 10100992), (4, 5050496), (8, 2525248), (11, 1836544), (16, 1262624), (17, 1188352), (22, 918272), (32, 631312), (34, 594176), (44, 459136), (64, 315656), (68, 297088), (88, 229568), (128, 157828), (136, 148544), (176, 114784), (187, 108032), (211, 95744), (256, 78914), (272, 74272), (352, 57392), (374, 54016), (422, 47872), (512, 39457), (544, 37136), (704, 28696), (748, 27008), (844, 23936), (1088, 18568), (1408, 14348), (1496, 13504), (1688, 11968), (2176, 9284), (2321, 8704), (2816, 7174), (2992, 6752), (3376, 5984), (3587, 5632), (4352, 4642)]