21108300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{991}}^1$

素因数の和:1079

約数の個数: 72

約数和(自身を含む): 61996032

約数和(自身を除く): 40887732

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 71, 75, 100, 142, 150, 213, 284, 300, 355, 426, 710, 852, 991, 1065, 1420, 1775, 1982, 2130, 2973, 3550, 3964, 4260, 4955, 5325, 5946, 7100, 9910, 10650, 11892, 14865, 19820, 21300, 24775, 29730, 49550, 59460, 70361, 74325, 99100, 140722, 148650, 211083, 281444, 297300, 351805, 422166, 703610, 844332, 1055415, 1407220, 1759025, 2110830, 3518050, 4221660, 5277075, 7036100, 10554150, 21108300]

約数ペア:

[(1, 21108300), (2, 10554150), (3, 7036100), (4, 5277075), (5, 4221660), (6, 3518050), (10, 2110830), (12, 1759025), (15, 1407220), (20, 1055415), (25, 844332), (30, 703610), (50, 422166), (60, 351805), (71, 297300), (75, 281444), (100, 211083), (142, 148650), (150, 140722), (213, 99100), (284, 74325), (300, 70361), (355, 59460), (426, 49550), (710, 29730), (852, 24775), (991, 21300), (1065, 19820), (1420, 14865), (1775, 11892), (1982, 10650), (2130, 9910), (2973, 7100), (3550, 5946), (3964, 5325), (4260, 4955)]