19419820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 50254848

約数和(自身を除く): 30835028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 37, 46, 70, 74, 92, 115, 140, 148, 161, 163, 185, 230, 259, 322, 326, 370, 460, 518, 644, 652, 740, 805, 815, 851, 1036, 1141, 1295, 1610, 1630, 1702, 2282, 2590, 3220, 3260, 3404, 3749, 4255, 4564, 5180, 5705, 5957, 6031, 7498, 8510, 11410, 11914, 12062, 14996, 17020, 18745, 22820, 23828, 24124, 26243, 29785, 30155, 37490, 42217, 52486, 59570, 60310, 74980, 84434, 104972, 119140, 120620, 131215, 138713, 168868, 211085, 262430, 277426, 422170, 524860, 554852, 693565, 844340, 970991, 1387130, 1941982, 2774260, 3883964, 4854955, 9709910, 19419820]

約数ペア:

[(1, 19419820), (2, 9709910), (4, 4854955), (5, 3883964), (7, 2774260), (10, 1941982), (14, 1387130), (20, 970991), (23, 844340), (28, 693565), (35, 554852), (37, 524860), (46, 422170), (70, 277426), (74, 262430), (92, 211085), (115, 168868), (140, 138713), (148, 131215), (161, 120620), (163, 119140), (185, 104972), (230, 84434), (259, 74980), (322, 60310), (326, 59570), (370, 52486), (460, 42217), (518, 37490), (644, 30155), (652, 29785), (740, 26243), (805, 24124), (815, 23828), (851, 22820), (1036, 18745), (1141, 17020), (1295, 14996), (1610, 12062), (1630, 11914), (1702, 11410), (2282, 8510), (2590, 7498), (3220, 6031), (3260, 5957), (3404, 5705), (3749, 5180), (4255, 4564)]