81222112

素因数分解:

$2^5\times {\mathrm{19}}^2\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:216

約数の個数: 72

約数和(自身を含む): 172821600

約数和(自身を除く): 91599488

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 79, 89, 152, 158, 178, 304, 316, 356, 361, 608, 632, 712, 722, 1264, 1424, 1444, 1501, 1691, 2528, 2848, 2888, 3002, 3382, 5776, 6004, 6764, 7031, 11552, 12008, 13528, 14062, 24016, 27056, 28124, 28519, 32129, 48032, 54112, 56248, 57038, 64258, 112496, 114076, 128516, 133589, 224992, 228152, 257032, 267178, 456304, 514064, 534356, 912608, 1028128, 1068712, 2137424, 2538191, 4274848, 5076382, 10152764, 20305528, 40611056, 81222112]

約数ペア:

[(1, 81222112), (2, 40611056), (4, 20305528), (8, 10152764), (16, 5076382), (19, 4274848), (32, 2538191), (38, 2137424), (76, 1068712), (79, 1028128), (89, 912608), (152, 534356), (158, 514064), (178, 456304), (304, 267178), (316, 257032), (356, 228152), (361, 224992), (608, 133589), (632, 128516), (712, 114076), (722, 112496), (1264, 64258), (1424, 57038), (1444, 56248), (1501, 54112), (1691, 48032), (2528, 32129), (2848, 28519), (2888, 28124), (3002, 27056), (3382, 24016), (5776, 14062), (6004, 13528), (6764, 12008), (7031, 11552)]