20321904

素因数分解:

$2^4\times 3^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:238

約数の個数: 80

約数和(自身を含む): 54639360

約数和(自身を除く): 34317456

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 67, 71, 89, 134, 142, 178, 201, 213, 267, 268, 284, 356, 402, 426, 534, 536, 568, 712, 804, 852, 1068, 1072, 1136, 1424, 1608, 1704, 2136, 3216, 3408, 4272, 4757, 5963, 6319, 9514, 11926, 12638, 14271, 17889, 18957, 19028, 23852, 25276, 28542, 35778, 37914, 38056, 47704, 50552, 57084, 71556, 75828, 76112, 95408, 101104, 114168, 143112, 151656, 228336, 286224, 303312, 423373, 846746, 1270119, 1693492, 2540238, 3386984, 5080476, 6773968, 10160952, 20321904]

約数ペア:

[(1, 20321904), (2, 10160952), (3, 6773968), (4, 5080476), (6, 3386984), (8, 2540238), (12, 1693492), (16, 1270119), (24, 846746), (48, 423373), (67, 303312), (71, 286224), (89, 228336), (134, 151656), (142, 143112), (178, 114168), (201, 101104), (213, 95408), (267, 76112), (268, 75828), (284, 71556), (356, 57084), (402, 50552), (426, 47704), (534, 38056), (536, 37914), (568, 35778), (712, 28542), (804, 25276), (852, 23852), (1068, 19028), (1072, 18957), (1136, 17889), (1424, 14271), (1608, 12638), (1704, 11926), (2136, 9514), (3216, 6319), (3408, 5963), (4272, 4757)]