21210016

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:461

約数の個数: 48

約数和(自身を含む): 44706816

約数和(自身を除く): 23496800

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 127, 136, 254, 272, 307, 508, 544, 614, 1016, 1228, 2032, 2159, 2456, 4064, 4318, 4912, 5219, 8636, 9824, 10438, 17272, 20876, 34544, 38989, 41752, 69088, 77978, 83504, 155956, 167008, 311912, 623824, 662813, 1247648, 1325626, 2651252, 5302504, 10605008, 21210016]

約数ペア:

[(1, 21210016), (2, 10605008), (4, 5302504), (8, 2651252), (16, 1325626), (17, 1247648), (32, 662813), (34, 623824), (68, 311912), (127, 167008), (136, 155956), (254, 83504), (272, 77978), (307, 69088), (508, 41752), (544, 38989), (614, 34544), (1016, 20876), (1228, 17272), (2032, 10438), (2159, 9824), (2456, 8636), (4064, 5219), (4318, 4912)]