221428280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{6199}}^1$

素因数の和:6276

約数の個数: 64

約数和(自身を含む): 535680000

約数和(自身を除く): 314251720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 470, 760, 893, 940, 1786, 1880, 3572, 4465, 6199, 7144, 8930, 12398, 17860, 24796, 30995, 35720, 49592, 61990, 117781, 123980, 235562, 247960, 291353, 471124, 582706, 588905, 942248, 1165412, 1177810, 1456765, 2330824, 2355620, 2913530, 4711240, 5535707, 5827060, 11071414, 11654120, 22142828, 27678535, 44285656, 55357070, 110714140, 221428280]

約数ペア:

[(1, 221428280), (2, 110714140), (4, 55357070), (5, 44285656), (8, 27678535), (10, 22142828), (19, 11654120), (20, 11071414), (38, 5827060), (40, 5535707), (47, 4711240), (76, 2913530), (94, 2355620), (95, 2330824), (152, 1456765), (188, 1177810), (190, 1165412), (235, 942248), (376, 588905), (380, 582706), (470, 471124), (760, 291353), (893, 247960), (940, 235562), (1786, 123980), (1880, 117781), (3572, 61990), (4465, 49592), (6199, 35720), (7144, 30995), (8930, 24796), (12398, 17860)]