21084870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:621

約数の個数: 64

約数和(自身を含む): 54120960

約数和(自身を除く): 33036090

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 71, 95, 114, 142, 190, 213, 285, 355, 426, 521, 570, 710, 1042, 1065, 1349, 1563, 2130, 2605, 2698, 3126, 4047, 5210, 6745, 7815, 8094, 9899, 13490, 15630, 19798, 20235, 29697, 36991, 40470, 49495, 59394, 73982, 98990, 110973, 148485, 184955, 221946, 296970, 369910, 554865, 702829, 1109730, 1405658, 2108487, 3514145, 4216974, 7028290, 10542435, 21084870]

約数ペア:

[(1, 21084870), (2, 10542435), (3, 7028290), (5, 4216974), (6, 3514145), (10, 2108487), (15, 1405658), (19, 1109730), (30, 702829), (38, 554865), (57, 369910), (71, 296970), (95, 221946), (114, 184955), (142, 148485), (190, 110973), (213, 98990), (285, 73982), (355, 59394), (426, 49495), (521, 40470), (570, 36991), (710, 29697), (1042, 20235), (1065, 19798), (1349, 15630), (1563, 13490), (2130, 9899), (2605, 8094), (2698, 7815), (3126, 6745), (4047, 5210)]