21372704

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{409}}^1$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 44634240

約数和(自身を除く): 23261536

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 71, 92, 142, 184, 284, 368, 409, 568, 736, 818, 1136, 1633, 1636, 2272, 3266, 3272, 6532, 6544, 9407, 13064, 13088, 18814, 26128, 29039, 37628, 52256, 58078, 75256, 116156, 150512, 232312, 301024, 464624, 667897, 929248, 1335794, 2671588, 5343176, 10686352, 21372704]

約数ペア:

[(1, 21372704), (2, 10686352), (4, 5343176), (8, 2671588), (16, 1335794), (23, 929248), (32, 667897), (46, 464624), (71, 301024), (92, 232312), (142, 150512), (184, 116156), (284, 75256), (368, 58078), (409, 52256), (568, 37628), (736, 29039), (818, 26128), (1136, 18814), (1633, 13088), (1636, 13064), (2272, 9407), (3266, 6544), (3272, 6532)]