78456420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{877}}^1$

素因数の和:970

約数の個数: 144

約数和(自身を含む): 276127488

約数和(自身を除く): 197671068

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, 71, 84, 90, 105, 126, 140, 142, 180, 210, 213, 252, 284, 315, 355, 420, 426, 497, 630, 639, 710, 852, 877, 994, 1065, 1260, 1278, 1420, 1491, 1754, 1988, 2130, 2485, 2556, 2631, 2982, 3195, 3508, 4260, 4385, 4473, 4970, 5262, 5964, 6139, 6390, 7455, 7893, 8770, 8946, 9940, 10524, 12278, 12780, 13155, 14910, 15786, 17540, 17892, 18417, 22365, 24556, 26310, 29820, 30695, 31572, 36834, 39465, 44730, 52620, 55251, 61390, 62267, 73668, 78930, 89460, 92085, 110502, 122780, 124534, 157860, 184170, 186801, 221004, 249068, 276255, 311335, 368340, 373602, 435869, 552510, 560403, 622670, 747204, 871738, 934005, 1105020, 1120806, 1245340, 1307607, 1743476, 1868010, 2179345, 2241612, 2615214, 2802015, 3736020, 3922821, 4358690, 5230428, 5604030, 6538035, 7845642, 8717380, 11208060, 13076070, 15691284, 19614105, 26152140, 39228210, 78456420]

約数ペア:

[(1, 78456420), (2, 39228210), (3, 26152140), (4, 19614105), (5, 15691284), (6, 13076070), (7, 11208060), (9, 8717380), (10, 7845642), (12, 6538035), (14, 5604030), (15, 5230428), (18, 4358690), (20, 3922821), (21, 3736020), (28, 2802015), (30, 2615214), (35, 2241612), (36, 2179345), (42, 1868010), (45, 1743476), (60, 1307607), (63, 1245340), (70, 1120806), (71, 1105020), (84, 934005), (90, 871738), (105, 747204), (126, 622670), (140, 560403), (142, 552510), (180, 435869), (210, 373602), (213, 368340), (252, 311335), (284, 276255), (315, 249068), (355, 221004), (420, 186801), (426, 184170), (497, 157860), (630, 124534), (639, 122780), (710, 110502), (852, 92085), (877, 89460), (994, 78930), (1065, 73668), (1260, 62267), (1278, 61390), (1420, 55251), (1491, 52620), (1754, 44730), (1988, 39465), (2130, 36834), (2485, 31572), (2556, 30695), (2631, 29820), (2982, 26310), (3195, 24556), (3508, 22365), (4260, 18417), (4385, 17892), (4473, 17540), (4970, 15786), (5262, 14910), (5964, 13155), (6139, 12780), (6390, 12278), (7455, 10524), (7893, 9940), (8770, 8946)]