18981928

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 43683840

約数和(自身を除く): 24701912

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 127, 136, 157, 238, 254, 314, 476, 508, 628, 889, 952, 1016, 1099, 1256, 1778, 2159, 2198, 2669, 3556, 4318, 4396, 5338, 7112, 8636, 8792, 10676, 15113, 17272, 18683, 19939, 21352, 30226, 37366, 39878, 60452, 74732, 79756, 120904, 139573, 149464, 159512, 279146, 338963, 558292, 677926, 1116584, 1355852, 2372741, 2711704, 4745482, 9490964, 18981928]

約数ペア:

[(1, 18981928), (2, 9490964), (4, 4745482), (7, 2711704), (8, 2372741), (14, 1355852), (17, 1116584), (28, 677926), (34, 558292), (56, 338963), (68, 279146), (119, 159512), (127, 149464), (136, 139573), (157, 120904), (238, 79756), (254, 74732), (314, 60452), (476, 39878), (508, 37366), (628, 30226), (889, 21352), (952, 19939), (1016, 18683), (1099, 17272), (1256, 15113), (1778, 10676), (2159, 8792), (2198, 8636), (2669, 7112), (3556, 5338), (4318, 4396)]