19883408

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{761}}^1$

素因数の和:863

約数の個数: 40

約数和(自身を含む): 40818816

約数和(自身を除く): 20935408

約数列:

[1, 2, 4, 8, 16, 23, 46, 71, 92, 142, 184, 284, 368, 568, 761, 1136, 1522, 1633, 3044, 3266, 6088, 6532, 12176, 13064, 17503, 26128, 35006, 54031, 70012, 108062, 140024, 216124, 280048, 432248, 864496, 1242713, 2485426, 4970852, 9941704, 19883408]

約数ペア:

[(1, 19883408), (2, 9941704), (4, 4970852), (8, 2485426), (16, 1242713), (23, 864496), (46, 432248), (71, 280048), (92, 216124), (142, 140024), (184, 108062), (284, 70012), (368, 54031), (568, 35006), (761, 26128), (1136, 17503), (1522, 13064), (1633, 12176), (3044, 6532), (3266, 6088)]