19989528

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{811}}^1$

素因数の和:912

約数の個数: 64

約数和(自身を含む): 54566400

約数和(自身を除く): 34576872

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 79, 104, 156, 158, 237, 312, 316, 474, 632, 811, 948, 1027, 1622, 1896, 2054, 2433, 3081, 3244, 4108, 4866, 6162, 6488, 8216, 9732, 10543, 12324, 19464, 21086, 24648, 31629, 42172, 63258, 64069, 84344, 126516, 128138, 192207, 253032, 256276, 384414, 512552, 768828, 832897, 1537656, 1665794, 2498691, 3331588, 4997382, 6663176, 9994764, 19989528]

約数ペア:

[(1, 19989528), (2, 9994764), (3, 6663176), (4, 4997382), (6, 3331588), (8, 2498691), (12, 1665794), (13, 1537656), (24, 832897), (26, 768828), (39, 512552), (52, 384414), (78, 256276), (79, 253032), (104, 192207), (156, 128138), (158, 126516), (237, 84344), (312, 64069), (316, 63258), (474, 42172), (632, 31629), (811, 24648), (948, 21086), (1027, 19464), (1622, 12324), (1896, 10543), (2054, 9732), (2433, 8216), (3081, 6488), (3244, 6162), (4108, 4866)]