21097680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5171}}^1$

素因数の和:5204

約数の個数: 80

約数和(自身を含む): 69263424

約数和(自身を除く): 48165744

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5171, 10342, 15513, 20684, 25855, 31026, 41368, 51710, 62052, 77565, 82736, 87907, 103420, 124104, 155130, 175814, 206840, 248208, 263721, 310260, 351628, 413680, 439535, 527442, 620520, 703256, 879070, 1054884, 1241040, 1318605, 1406512, 1758140, 2109768, 2637210, 3516280, 4219536, 5274420, 7032560, 10548840, 21097680]

約数ペア:

[(1, 21097680), (2, 10548840), (3, 7032560), (4, 5274420), (5, 4219536), (6, 3516280), (8, 2637210), (10, 2109768), (12, 1758140), (15, 1406512), (16, 1318605), (17, 1241040), (20, 1054884), (24, 879070), (30, 703256), (34, 620520), (40, 527442), (48, 439535), (51, 413680), (60, 351628), (68, 310260), (80, 263721), (85, 248208), (102, 206840), (120, 175814), (136, 155130), (170, 124104), (204, 103420), (240, 87907), (255, 82736), (272, 77565), (340, 62052), (408, 51710), (510, 41368), (680, 31026), (816, 25855), (1020, 20684), (1360, 15513), (2040, 10342), (4080, 5171)]