18734320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:434

約数の個数: 80

約数和(自身を含む): 48434400

約数和(自身を除く): 29700080

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 61, 80, 88, 110, 122, 176, 220, 244, 305, 349, 440, 488, 610, 671, 698, 880, 976, 1220, 1342, 1396, 1745, 2440, 2684, 2792, 3355, 3490, 3839, 4880, 5368, 5584, 6710, 6980, 7678, 10736, 13420, 13960, 15356, 19195, 21289, 26840, 27920, 30712, 38390, 42578, 53680, 61424, 76780, 85156, 106445, 153560, 170312, 212890, 234179, 307120, 340624, 425780, 468358, 851560, 936716, 1170895, 1703120, 1873432, 2341790, 3746864, 4683580, 9367160, 18734320]

約数ペア:

[(1, 18734320), (2, 9367160), (4, 4683580), (5, 3746864), (8, 2341790), (10, 1873432), (11, 1703120), (16, 1170895), (20, 936716), (22, 851560), (40, 468358), (44, 425780), (55, 340624), (61, 307120), (80, 234179), (88, 212890), (110, 170312), (122, 153560), (176, 106445), (220, 85156), (244, 76780), (305, 61424), (349, 53680), (440, 42578), (488, 38390), (610, 30712), (671, 27920), (698, 26840), (880, 21289), (976, 19195), (1220, 15356), (1342, 13960), (1396, 13420), (1745, 10736), (2440, 7678), (2684, 6980), (2792, 6710), (3355, 5584), (3490, 5368), (3839, 4880)]