21356190

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:239

約数の個数: 128

約数和(自身を含む): 62899200

約数和(自身を除く): 41543010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 23, 27, 30, 38, 45, 46, 54, 57, 69, 90, 95, 114, 115, 135, 138, 171, 181, 190, 207, 230, 270, 285, 342, 345, 362, 414, 437, 513, 543, 570, 621, 690, 855, 874, 905, 1026, 1035, 1086, 1242, 1311, 1629, 1710, 1810, 2070, 2185, 2565, 2622, 2715, 3105, 3258, 3439, 3933, 4163, 4370, 4887, 5130, 5430, 6210, 6555, 6878, 7866, 8145, 8326, 9774, 10317, 11799, 12489, 13110, 16290, 17195, 19665, 20634, 20815, 23598, 24435, 24978, 30951, 34390, 37467, 39330, 41630, 48870, 51585, 58995, 61902, 62445, 74934, 79097, 92853, 103170, 112401, 117990, 124890, 154755, 158194, 185706, 187335, 224802, 237291, 309510, 374670, 395485, 464265, 474582, 562005, 711873, 790970, 928530, 1124010, 1186455, 1423746, 2135619, 2372910, 3559365, 4271238, 7118730, 10678095, 21356190]

約数ペア:

[(1, 21356190), (2, 10678095), (3, 7118730), (5, 4271238), (6, 3559365), (9, 2372910), (10, 2135619), (15, 1423746), (18, 1186455), (19, 1124010), (23, 928530), (27, 790970), (30, 711873), (38, 562005), (45, 474582), (46, 464265), (54, 395485), (57, 374670), (69, 309510), (90, 237291), (95, 224802), (114, 187335), (115, 185706), (135, 158194), (138, 154755), (171, 124890), (181, 117990), (190, 112401), (207, 103170), (230, 92853), (270, 79097), (285, 74934), (342, 62445), (345, 61902), (362, 58995), (414, 51585), (437, 48870), (513, 41630), (543, 39330), (570, 37467), (621, 34390), (690, 30951), (855, 24978), (874, 24435), (905, 23598), (1026, 20815), (1035, 20634), (1086, 19665), (1242, 17195), (1311, 16290), (1629, 13110), (1710, 12489), (1810, 11799), (2070, 10317), (2185, 9774), (2565, 8326), (2622, 8145), (2715, 7866), (3105, 6878), (3258, 6555), (3439, 6210), (3933, 5430), (4163, 5130), (4370, 4887)]