80327200

素因数分解:

$2^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:171

約数の個数: 144

約数和(自身を含む): 209986560

約数和(自身を除く): 129659360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 41, 50, 62, 79, 80, 82, 100, 124, 155, 158, 160, 164, 200, 205, 248, 310, 316, 328, 395, 400, 410, 496, 620, 632, 656, 775, 790, 800, 820, 992, 1025, 1240, 1264, 1271, 1312, 1550, 1580, 1640, 1975, 2050, 2449, 2480, 2528, 2542, 3100, 3160, 3239, 3280, 3950, 4100, 4898, 4960, 5084, 6200, 6320, 6355, 6478, 6560, 7900, 8200, 9796, 10168, 12245, 12400, 12640, 12710, 12956, 15800, 16195, 16400, 19592, 20336, 24490, 24800, 25420, 25912, 31600, 31775, 32390, 32800, 39184, 40672, 48980, 50840, 51824, 61225, 63200, 63550, 64780, 78368, 80975, 97960, 100409, 101680, 103648, 122450, 127100, 129560, 161950, 195920, 200818, 203360, 244900, 254200, 259120, 323900, 391840, 401636, 489800, 502045, 508400, 518240, 647800, 803272, 979600, 1004090, 1016800, 1295600, 1606544, 1959200, 2008180, 2510225, 2591200, 3213088, 4016360, 5020450, 8032720, 10040900, 16065440, 20081800, 40163600, 80327200]

約数ペア:

[(1, 80327200), (2, 40163600), (4, 20081800), (5, 16065440), (8, 10040900), (10, 8032720), (16, 5020450), (20, 4016360), (25, 3213088), (31, 2591200), (32, 2510225), (40, 2008180), (41, 1959200), (50, 1606544), (62, 1295600), (79, 1016800), (80, 1004090), (82, 979600), (100, 803272), (124, 647800), (155, 518240), (158, 508400), (160, 502045), (164, 489800), (200, 401636), (205, 391840), (248, 323900), (310, 259120), (316, 254200), (328, 244900), (395, 203360), (400, 200818), (410, 195920), (496, 161950), (620, 129560), (632, 127100), (656, 122450), (775, 103648), (790, 101680), (800, 100409), (820, 97960), (992, 80975), (1025, 78368), (1240, 64780), (1264, 63550), (1271, 63200), (1312, 61225), (1550, 51824), (1580, 50840), (1640, 48980), (1975, 40672), (2050, 39184), (2449, 32800), (2480, 32390), (2528, 31775), (2542, 31600), (3100, 25912), (3160, 25420), (3239, 24800), (3280, 24490), (3950, 20336), (4100, 19592), (4898, 16400), (4960, 16195), (5084, 15800), (6200, 12956), (6320, 12710), (6355, 12640), (6478, 12400), (6560, 12245), (7900, 10168), (8200, 9796)]