20461920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{907}}^1$

素因数の和:972

約数の個数: 96

約数和(自身を含む): 65899008

約数和(自身を除く): 45437088

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 47, 48, 60, 80, 94, 96, 120, 141, 160, 188, 235, 240, 282, 376, 470, 480, 564, 705, 752, 907, 940, 1128, 1410, 1504, 1814, 1880, 2256, 2721, 2820, 3628, 3760, 4512, 4535, 5442, 5640, 7256, 7520, 9070, 10884, 11280, 13605, 14512, 18140, 21768, 22560, 27210, 29024, 36280, 42629, 43536, 54420, 72560, 85258, 87072, 108840, 127887, 145120, 170516, 213145, 217680, 255774, 341032, 426290, 435360, 511548, 639435, 682064, 852580, 1023096, 1278870, 1364128, 1705160, 2046192, 2557740, 3410320, 4092384, 5115480, 6820640, 10230960, 20461920]

約数ペア:

[(1, 20461920), (2, 10230960), (3, 6820640), (4, 5115480), (5, 4092384), (6, 3410320), (8, 2557740), (10, 2046192), (12, 1705160), (15, 1364128), (16, 1278870), (20, 1023096), (24, 852580), (30, 682064), (32, 639435), (40, 511548), (47, 435360), (48, 426290), (60, 341032), (80, 255774), (94, 217680), (96, 213145), (120, 170516), (141, 145120), (160, 127887), (188, 108840), (235, 87072), (240, 85258), (282, 72560), (376, 54420), (470, 43536), (480, 42629), (564, 36280), (705, 29024), (752, 27210), (907, 22560), (940, 21768), (1128, 18140), (1410, 14512), (1504, 13605), (1814, 11280), (1880, 10884), (2256, 9070), (2721, 7520), (2820, 7256), (3628, 5640), (3760, 5442), (4512, 4535)]