21820928

素因数分解:

$2^9\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:167

約数の個数: 80

約数和(自身を含む): 48612960

約数和(自身を除く): 26792032

約数列:

[1, 2, 4, 8, 16, 17, 23, 32, 34, 46, 64, 68, 92, 109, 128, 136, 184, 218, 256, 272, 368, 391, 436, 512, 544, 736, 782, 872, 1088, 1472, 1564, 1744, 1853, 2176, 2507, 2944, 3128, 3488, 3706, 4352, 5014, 5888, 6256, 6976, 7412, 8704, 10028, 11776, 12512, 13952, 14824, 20056, 25024, 27904, 29648, 40112, 42619, 50048, 55808, 59296, 80224, 85238, 100096, 118592, 160448, 170476, 200192, 237184, 320896, 340952, 474368, 641792, 681904, 948736, 1283584, 1363808, 2727616, 5455232, 10910464, 21820928]

約数ペア:

[(1, 21820928), (2, 10910464), (4, 5455232), (8, 2727616), (16, 1363808), (17, 1283584), (23, 948736), (32, 681904), (34, 641792), (46, 474368), (64, 340952), (68, 320896), (92, 237184), (109, 200192), (128, 170476), (136, 160448), (184, 118592), (218, 100096), (256, 85238), (272, 80224), (368, 59296), (391, 55808), (436, 50048), (512, 42619), (544, 40112), (736, 29648), (782, 27904), (872, 25024), (1088, 20056), (1472, 14824), (1564, 13952), (1744, 12512), (1853, 11776), (2176, 10028), (2507, 8704), (2944, 7412), (3128, 6976), (3488, 6256), (3706, 5888), (4352, 5014)]