21130320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5179}}^1$

素因数の和:5212

約数の個数: 80

約数和(自身を含む): 69370560

約数和(自身を除く): 48240240

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, 5179, 10358, 15537, 20716, 25895, 31074, 41432, 51790, 62148, 77685, 82864, 88043, 103580, 124296, 155370, 176086, 207160, 248592, 264129, 310740, 352172, 414320, 440215, 528258, 621480, 704344, 880430, 1056516, 1242960, 1320645, 1408688, 1760860, 2113032, 2641290, 3521720, 4226064, 5282580, 7043440, 10565160, 21130320]

約数ペア:

[(1, 21130320), (2, 10565160), (3, 7043440), (4, 5282580), (5, 4226064), (6, 3521720), (8, 2641290), (10, 2113032), (12, 1760860), (15, 1408688), (16, 1320645), (17, 1242960), (20, 1056516), (24, 880430), (30, 704344), (34, 621480), (40, 528258), (48, 440215), (51, 414320), (60, 352172), (68, 310740), (80, 264129), (85, 248592), (102, 207160), (120, 176086), (136, 155370), (170, 124296), (204, 103580), (240, 88043), (255, 82864), (272, 77685), (340, 62148), (408, 51790), (510, 41432), (680, 31074), (816, 25895), (1020, 20716), (1360, 15537), (2040, 10358), (4080, 5179)]