19840480

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11273}}^1$

素因数の和:11299

約数の個数: 48

約数和(自身を含む): 51138864

約数和(自身を除く): 31298384

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11273, 22546, 45092, 56365, 90184, 112730, 124003, 180368, 225460, 248006, 360736, 450920, 496012, 620015, 901840, 992024, 1240030, 1803680, 1984048, 2480060, 3968096, 4960120, 9920240, 19840480]

約数ペア:

[(1, 19840480), (2, 9920240), (4, 4960120), (5, 3968096), (8, 2480060), (10, 1984048), (11, 1803680), (16, 1240030), (20, 992024), (22, 901840), (32, 620015), (40, 496012), (44, 450920), (55, 360736), (80, 248006), (88, 225460), (110, 180368), (160, 124003), (176, 112730), (220, 90184), (352, 56365), (440, 45092), (880, 22546), (1760, 11273)]