21385116

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{421}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 58063824

約数和(自身を除く): 36678708

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 83, 102, 153, 166, 204, 249, 306, 332, 421, 498, 612, 747, 842, 996, 1263, 1411, 1494, 1684, 2526, 2822, 2988, 3789, 4233, 5052, 5644, 7157, 7578, 8466, 12699, 14314, 15156, 16932, 21471, 25398, 28628, 34943, 42942, 50796, 64413, 69886, 85884, 104829, 128826, 139772, 209658, 257652, 314487, 419316, 594031, 628974, 1188062, 1257948, 1782093, 2376124, 3564186, 5346279, 7128372, 10692558, 21385116]

約数ペア:

[(1, 21385116), (2, 10692558), (3, 7128372), (4, 5346279), (6, 3564186), (9, 2376124), (12, 1782093), (17, 1257948), (18, 1188062), (34, 628974), (36, 594031), (51, 419316), (68, 314487), (83, 257652), (102, 209658), (153, 139772), (166, 128826), (204, 104829), (249, 85884), (306, 69886), (332, 64413), (421, 50796), (498, 42942), (612, 34943), (747, 28628), (842, 25398), (996, 21471), (1263, 16932), (1411, 15156), (1494, 14314), (1684, 12699), (2526, 8466), (2822, 7578), (2988, 7157), (3789, 5644), (4233, 5052)]