20965384

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 45308160

約数和(自身を除く): 24342776

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 47, 74, 88, 94, 137, 148, 188, 274, 296, 376, 407, 517, 548, 814, 1034, 1096, 1507, 1628, 1739, 2068, 3014, 3256, 3478, 4136, 5069, 6028, 6439, 6956, 10138, 12056, 12878, 13912, 19129, 20276, 25756, 38258, 40552, 51512, 55759, 70829, 76516, 111518, 141658, 153032, 223036, 238243, 283316, 446072, 476486, 566632, 952972, 1905944, 2620673, 5241346, 10482692, 20965384]

約数ペア:

[(1, 20965384), (2, 10482692), (4, 5241346), (8, 2620673), (11, 1905944), (22, 952972), (37, 566632), (44, 476486), (47, 446072), (74, 283316), (88, 238243), (94, 223036), (137, 153032), (148, 141658), (188, 111518), (274, 76516), (296, 70829), (376, 55759), (407, 51512), (517, 40552), (548, 38258), (814, 25756), (1034, 20276), (1096, 19129), (1507, 13912), (1628, 12878), (1739, 12056), (2068, 10138), (3014, 6956), (3256, 6439), (3478, 6028), (4136, 5069)]