19956764

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 38814720

約数和(自身を除く): 18857956

約数列:

[1, 2, 4, 19, 37, 38, 47, 74, 76, 94, 148, 151, 188, 302, 604, 703, 893, 1406, 1739, 1786, 2812, 2869, 3478, 3572, 5587, 5738, 6956, 7097, 11174, 11476, 14194, 22348, 28388, 33041, 66082, 106153, 132164, 134843, 212306, 262589, 269686, 424612, 525178, 539372, 1050356, 4989191, 9978382, 19956764]

約数ペア:

[(1, 19956764), (2, 9978382), (4, 4989191), (19, 1050356), (37, 539372), (38, 525178), (47, 424612), (74, 269686), (76, 262589), (94, 212306), (148, 134843), (151, 132164), (188, 106153), (302, 66082), (604, 33041), (703, 28388), (893, 22348), (1406, 14194), (1739, 11476), (1786, 11174), (2812, 7097), (2869, 6956), (3478, 5738), (3572, 5587)]