19881296

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3847}}^1$

素因数の和:3891

約数の個数: 40

約数和(自身を含む): 42943680

約数和(自身を除く): 23062384

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 3847, 5168, 7694, 15388, 30776, 61552, 65399, 73093, 130798, 146186, 261596, 292372, 523192, 584744, 1046384, 1169488, 1242581, 2485162, 4970324, 9940648, 19881296]

約数ペア:

[(1, 19881296), (2, 9940648), (4, 4970324), (8, 2485162), (16, 1242581), (17, 1169488), (19, 1046384), (34, 584744), (38, 523192), (68, 292372), (76, 261596), (136, 146186), (152, 130798), (272, 73093), (304, 65399), (323, 61552), (646, 30776), (1292, 15388), (2584, 7694), (3847, 5168)]