21418930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 43934688

約数和(自身を除く): 22515758

約数列:

[1, 2, 5, 10, 13, 26, 37, 61, 65, 73, 74, 122, 130, 146, 185, 305, 365, 370, 481, 610, 730, 793, 949, 962, 1586, 1898, 2257, 2405, 2701, 3965, 4453, 4514, 4745, 4810, 5402, 7930, 8906, 9490, 11285, 13505, 22265, 22570, 27010, 29341, 35113, 44530, 57889, 58682, 70226, 115778, 146705, 164761, 175565, 289445, 293410, 329522, 351130, 578890, 823805, 1647610, 2141893, 4283786, 10709465, 21418930]

約数ペア:

[(1, 21418930), (2, 10709465), (5, 4283786), (10, 2141893), (13, 1647610), (26, 823805), (37, 578890), (61, 351130), (65, 329522), (73, 293410), (74, 289445), (122, 175565), (130, 164761), (146, 146705), (185, 115778), (305, 70226), (365, 58682), (370, 57889), (481, 44530), (610, 35113), (730, 29341), (793, 27010), (949, 22570), (962, 22265), (1586, 13505), (1898, 11285), (2257, 9490), (2405, 8906), (2701, 7930), (3965, 5402), (4453, 4810), (4514, 4745)]