21996528

素因数分解:

$2^4\times 3^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:390

約数の個数: 80

約数和(自身を含む): 60710400

約数和(自身を除く): 38713872

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 38, 48, 57, 76, 89, 114, 152, 178, 228, 267, 271, 304, 356, 456, 534, 542, 712, 813, 912, 1068, 1084, 1424, 1626, 1691, 2136, 2168, 3252, 3382, 4272, 4336, 5073, 5149, 6504, 6764, 10146, 10298, 13008, 13528, 15447, 20292, 20596, 24119, 27056, 30894, 40584, 41192, 48238, 61788, 72357, 81168, 82384, 96476, 123576, 144714, 192952, 247152, 289428, 385904, 458261, 578856, 916522, 1157712, 1374783, 1833044, 2749566, 3666088, 5499132, 7332176, 10998264, 21996528]

約数ペア:

[(1, 21996528), (2, 10998264), (3, 7332176), (4, 5499132), (6, 3666088), (8, 2749566), (12, 1833044), (16, 1374783), (19, 1157712), (24, 916522), (38, 578856), (48, 458261), (57, 385904), (76, 289428), (89, 247152), (114, 192952), (152, 144714), (178, 123576), (228, 96476), (267, 82384), (271, 81168), (304, 72357), (356, 61788), (456, 48238), (534, 41192), (542, 40584), (712, 30894), (813, 27056), (912, 24119), (1068, 20596), (1084, 20292), (1424, 15447), (1626, 13528), (1691, 13008), (2136, 10298), (2168, 10146), (3252, 6764), (3382, 6504), (4272, 5149), (4336, 5073)]