21613664

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{593}}^1$

素因数の和:687

約数の個数: 48

約数和(自身を含む): 45804528

約数和(自身を除く): 24190864

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 67, 68, 134, 136, 268, 272, 536, 544, 593, 1072, 1139, 1186, 2144, 2278, 2372, 4556, 4744, 9112, 9488, 10081, 18224, 18976, 20162, 36448, 39731, 40324, 79462, 80648, 158924, 161296, 317848, 322592, 635696, 675427, 1271392, 1350854, 2701708, 5403416, 10806832, 21613664]

約数ペア:

[(1, 21613664), (2, 10806832), (4, 5403416), (8, 2701708), (16, 1350854), (17, 1271392), (32, 675427), (34, 635696), (67, 322592), (68, 317848), (134, 161296), (136, 158924), (268, 80648), (272, 79462), (536, 40324), (544, 39731), (593, 36448), (1072, 20162), (1139, 18976), (1186, 18224), (2144, 10081), (2278, 9488), (2372, 9112), (4556, 4744)]