81971488

素因数分解:

$2^5\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{331}}^1$

素因数の和:521

約数の個数: 48

約数和(自身を含む): 165654720

約数和(自身を除く): 83683232

約数列:

[1, 2, 4, 8, 16, 32, 71, 109, 142, 218, 284, 331, 436, 568, 662, 872, 1136, 1324, 1744, 2272, 2648, 3488, 5296, 7739, 10592, 15478, 23501, 30956, 36079, 47002, 61912, 72158, 94004, 123824, 144316, 188008, 247648, 288632, 376016, 577264, 752032, 1154528, 2561609, 5123218, 10246436, 20492872, 40985744, 81971488]

約数ペア:

[(1, 81971488), (2, 40985744), (4, 20492872), (8, 10246436), (16, 5123218), (32, 2561609), (71, 1154528), (109, 752032), (142, 577264), (218, 376016), (284, 288632), (331, 247648), (436, 188008), (568, 144316), (662, 123824), (872, 94004), (1136, 72158), (1324, 61912), (1744, 47002), (2272, 36079), (2648, 30956), (3488, 23501), (5296, 15478), (7739, 10592)]