19790820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:274

約数の個数: 144

約数和(自身を含む): 69713280

約数和(自身を除く): 49922460

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 113, 126, 139, 140, 180, 210, 226, 252, 278, 315, 339, 417, 420, 452, 556, 565, 630, 678, 695, 791, 834, 973, 1017, 1130, 1251, 1260, 1356, 1390, 1582, 1668, 1695, 1946, 2034, 2085, 2260, 2373, 2502, 2780, 2919, 3164, 3390, 3892, 3955, 4068, 4170, 4746, 4865, 5004, 5085, 5838, 6255, 6780, 7119, 7910, 8340, 8757, 9492, 9730, 10170, 11676, 11865, 12510, 14238, 14595, 15707, 15820, 17514, 19460, 20340, 23730, 25020, 28476, 29190, 31414, 35028, 35595, 43785, 47121, 47460, 58380, 62828, 71190, 78535, 87570, 94242, 109949, 141363, 142380, 157070, 175140, 188484, 219898, 235605, 282726, 314140, 329847, 439796, 471210, 549745, 565452, 659694, 706815, 942420, 989541, 1099490, 1319388, 1413630, 1649235, 1979082, 2198980, 2827260, 3298470, 3958164, 4947705, 6596940, 9895410, 19790820]

約数ペア:

[(1, 19790820), (2, 9895410), (3, 6596940), (4, 4947705), (5, 3958164), (6, 3298470), (7, 2827260), (9, 2198980), (10, 1979082), (12, 1649235), (14, 1413630), (15, 1319388), (18, 1099490), (20, 989541), (21, 942420), (28, 706815), (30, 659694), (35, 565452), (36, 549745), (42, 471210), (45, 439796), (60, 329847), (63, 314140), (70, 282726), (84, 235605), (90, 219898), (105, 188484), (113, 175140), (126, 157070), (139, 142380), (140, 141363), (180, 109949), (210, 94242), (226, 87570), (252, 78535), (278, 71190), (315, 62828), (339, 58380), (417, 47460), (420, 47121), (452, 43785), (556, 35595), (565, 35028), (630, 31414), (678, 29190), (695, 28476), (791, 25020), (834, 23730), (973, 20340), (1017, 19460), (1130, 17514), (1251, 15820), (1260, 15707), (1356, 14595), (1390, 14238), (1582, 12510), (1668, 11865), (1695, 11676), (1946, 10170), (2034, 9730), (2085, 9492), (2260, 8757), (2373, 8340), (2502, 7910), (2780, 7119), (2919, 6780), (3164, 6255), (3390, 5838), (3892, 5085), (3955, 5004), (4068, 4865), (4170, 4746)]