19810364

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{787}}^1$

素因数の和:858

約数の個数: 48

約数和(自身を含む): 42362880

約数和(自身を除く): 22552516

約数列:

[1, 2, 4, 7, 14, 28, 29, 31, 58, 62, 116, 124, 203, 217, 406, 434, 787, 812, 868, 899, 1574, 1798, 3148, 3596, 5509, 6293, 11018, 12586, 22036, 22823, 24397, 25172, 45646, 48794, 91292, 97588, 159761, 170779, 319522, 341558, 639044, 683116, 707513, 1415026, 2830052, 4952591, 9905182, 19810364]

約数ペア:

[(1, 19810364), (2, 9905182), (4, 4952591), (7, 2830052), (14, 1415026), (28, 707513), (29, 683116), (31, 639044), (58, 341558), (62, 319522), (116, 170779), (124, 159761), (203, 97588), (217, 91292), (406, 48794), (434, 45646), (787, 25172), (812, 24397), (868, 22823), (899, 22036), (1574, 12586), (1798, 11018), (3148, 6293), (3596, 5509)]