21219808

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2053}}^1$

素因数の和:2099

約数の個数: 48

約数和(自身を含む): 46584720

約数和(自身を除く): 25364912

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 68, 76, 136, 152, 272, 304, 323, 544, 608, 646, 1292, 2053, 2584, 4106, 5168, 8212, 10336, 16424, 32848, 34901, 39007, 65696, 69802, 78014, 139604, 156028, 279208, 312056, 558416, 624112, 663119, 1116832, 1248224, 1326238, 2652476, 5304952, 10609904, 21219808]

約数ペア:

[(1, 21219808), (2, 10609904), (4, 5304952), (8, 2652476), (16, 1326238), (17, 1248224), (19, 1116832), (32, 663119), (34, 624112), (38, 558416), (68, 312056), (76, 279208), (136, 156028), (152, 139604), (272, 78014), (304, 69802), (323, 65696), (544, 39007), (608, 34901), (646, 32848), (1292, 16424), (2053, 10336), (2584, 8212), (4106, 5168)]