19319920

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1$

素因数の和:218

約数の個数: 80

約数和(自身を含む): 47327328

約数和(自身を除く): 28007408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 61, 74, 80, 107, 122, 148, 185, 214, 244, 296, 305, 370, 428, 488, 535, 592, 610, 740, 856, 976, 1070, 1220, 1480, 1712, 2140, 2257, 2440, 2960, 3959, 4280, 4514, 4880, 6527, 7918, 8560, 9028, 11285, 13054, 15836, 18056, 19795, 22570, 26108, 31672, 32635, 36112, 39590, 45140, 52216, 63344, 65270, 79180, 90280, 104432, 130540, 158360, 180560, 241499, 261080, 316720, 482998, 522160, 965996, 1207495, 1931992, 2414990, 3863984, 4829980, 9659960, 19319920]

約数ペア:

[(1, 19319920), (2, 9659960), (4, 4829980), (5, 3863984), (8, 2414990), (10, 1931992), (16, 1207495), (20, 965996), (37, 522160), (40, 482998), (61, 316720), (74, 261080), (80, 241499), (107, 180560), (122, 158360), (148, 130540), (185, 104432), (214, 90280), (244, 79180), (296, 65270), (305, 63344), (370, 52216), (428, 45140), (488, 39590), (535, 36112), (592, 32635), (610, 31672), (740, 26108), (856, 22570), (976, 19795), (1070, 18056), (1220, 15836), (1480, 13054), (1712, 11285), (2140, 9028), (2257, 8560), (2440, 7918), (2960, 6527), (3959, 4880), (4280, 4514)]