19724960

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:166

約数の個数: 96

約数和(自身を含む): 49496832

約数和(自身を除く): 29771872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 47, 61, 80, 86, 94, 122, 160, 172, 188, 215, 235, 244, 305, 344, 376, 430, 470, 488, 610, 688, 752, 860, 940, 976, 1220, 1376, 1504, 1720, 1880, 1952, 2021, 2440, 2623, 2867, 3440, 3760, 4042, 4880, 5246, 5734, 6880, 7520, 8084, 9760, 10105, 10492, 11468, 13115, 14335, 16168, 20210, 20984, 22936, 26230, 28670, 32336, 40420, 41968, 45872, 52460, 57340, 64672, 80840, 83936, 91744, 104920, 114680, 123281, 161680, 209840, 229360, 246562, 323360, 419680, 458720, 493124, 616405, 986248, 1232810, 1972496, 2465620, 3944992, 4931240, 9862480, 19724960]

約数ペア:

[(1, 19724960), (2, 9862480), (4, 4931240), (5, 3944992), (8, 2465620), (10, 1972496), (16, 1232810), (20, 986248), (32, 616405), (40, 493124), (43, 458720), (47, 419680), (61, 323360), (80, 246562), (86, 229360), (94, 209840), (122, 161680), (160, 123281), (172, 114680), (188, 104920), (215, 91744), (235, 83936), (244, 80840), (305, 64672), (344, 57340), (376, 52460), (430, 45872), (470, 41968), (488, 40420), (610, 32336), (688, 28670), (752, 26230), (860, 22936), (940, 20984), (976, 20210), (1220, 16168), (1376, 14335), (1504, 13115), (1720, 11468), (1880, 10492), (1952, 10105), (2021, 9760), (2440, 8084), (2623, 7520), (2867, 6880), (3440, 5734), (3760, 5246), (4042, 4880)]