21531675520

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{41179}}^1$

素因数の和:41260

約数の個数: 128

約数和(自身を含む): 55444752000

約数和(自身を除く): 33913076480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 43, 64, 76, 80, 86, 95, 128, 152, 160, 172, 190, 215, 304, 320, 344, 380, 430, 608, 640, 688, 760, 817, 860, 1216, 1376, 1520, 1634, 1720, 2432, 2752, 3040, 3268, 3440, 4085, 5504, 6080, 6536, 6880, 8170, 12160, 13072, 13760, 16340, 26144, 27520, 32680, 41179, 52288, 65360, 82358, 104576, 130720, 164716, 205895, 261440, 329432, 411790, 522880, 658864, 782401, 823580, 1317728, 1564802, 1647160, 1770697, 2635456, 3129604, 3294320, 3541394, 3912005, 5270912, 6259208, 6588640, 7082788, 7824010, 8853485, 12518416, 13177280, 14165576, 15648020, 17706970, 25036832, 26354560, 28331152, 31296040, 33643243, 35413940, 50073664, 56662304, 62592080, 67286486, 70827880, 100147328, 113324608, 125184160, 134572972, 141655760, 168216215, 226649216, 250368320, 269145944, 283311520, 336432430, 500736640, 538291888, 566623040, 672864860, 1076583776, 1133246080, 1345729720, 2153167552, 2691459440, 4306335104, 5382918880, 10765837760, 21531675520]

約数ペア:

[(1, 21531675520), (2, 10765837760), (4, 5382918880), (5, 4306335104), (8, 2691459440), (10, 2153167552), (16, 1345729720), (19, 1133246080), (20, 1076583776), (32, 672864860), (38, 566623040), (40, 538291888), (43, 500736640), (64, 336432430), (76, 283311520), (80, 269145944), (86, 250368320), (95, 226649216), (128, 168216215), (152, 141655760), (160, 134572972), (172, 125184160), (190, 113324608), (215, 100147328), (304, 70827880), (320, 67286486), (344, 62592080), (380, 56662304), (430, 50073664), (608, 35413940), (640, 33643243), (688, 31296040), (760, 28331152), (817, 26354560), (860, 25036832), (1216, 17706970), (1376, 15648020), (1520, 14165576), (1634, 13177280), (1720, 12518416), (2432, 8853485), (2752, 7824010), (3040, 7082788), (3268, 6588640), (3440, 6259208), (4085, 5270912), (5504, 3912005), (6080, 3541394), (6536, 3294320), (6880, 3129604), (8170, 2635456), (12160, 1770697), (13072, 1647160), (13760, 1564802), (16340, 1317728), (26144, 823580), (27520, 782401), (32680, 658864), (41179, 522880), (52288, 411790), (65360, 329432), (82358, 261440), (104576, 205895), (130720, 164716)]