20697390

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:303

約数の個数: 128

約数和(自身を含む): 64696320

約数和(自身を除く): 43998930

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 47, 54, 63, 70, 90, 94, 105, 126, 135, 141, 189, 210, 233, 235, 270, 282, 315, 329, 378, 423, 466, 470, 630, 658, 699, 705, 846, 945, 987, 1165, 1269, 1398, 1410, 1631, 1645, 1890, 1974, 2097, 2115, 2330, 2538, 2961, 3262, 3290, 3495, 4194, 4230, 4893, 4935, 5922, 6291, 6345, 6990, 8155, 8883, 9786, 9870, 10485, 10951, 12582, 12690, 14679, 14805, 16310, 17766, 20970, 21902, 24465, 29358, 29610, 31455, 32853, 44037, 44415, 48930, 54755, 62910, 65706, 73395, 76657, 88074, 88830, 98559, 109510, 146790, 153314, 164265, 197118, 220185, 229971, 295677, 328530, 383285, 440370, 459942, 492795, 591354, 689913, 766570, 985590, 1149855, 1379826, 1478385, 2069739, 2299710, 2956770, 3449565, 4139478, 6899130, 10348695, 20697390]

約数ペア:

[(1, 20697390), (2, 10348695), (3, 6899130), (5, 4139478), (6, 3449565), (7, 2956770), (9, 2299710), (10, 2069739), (14, 1478385), (15, 1379826), (18, 1149855), (21, 985590), (27, 766570), (30, 689913), (35, 591354), (42, 492795), (45, 459942), (47, 440370), (54, 383285), (63, 328530), (70, 295677), (90, 229971), (94, 220185), (105, 197118), (126, 164265), (135, 153314), (141, 146790), (189, 109510), (210, 98559), (233, 88830), (235, 88074), (270, 76657), (282, 73395), (315, 65706), (329, 62910), (378, 54755), (423, 48930), (466, 44415), (470, 44037), (630, 32853), (658, 31455), (699, 29610), (705, 29358), (846, 24465), (945, 21902), (987, 20970), (1165, 17766), (1269, 16310), (1398, 14805), (1410, 14679), (1631, 12690), (1645, 12582), (1890, 10951), (1974, 10485), (2097, 9870), (2115, 9786), (2330, 8883), (2538, 8155), (2961, 6990), (3262, 6345), (3290, 6291), (3495, 5922), (4194, 4935), (4230, 4893)]