1891420380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{21401}}^1$

素因数の和:21907

約数の個数: 72

約数和(自身を含む): 5749262064

約数和(自身を除く): 3857841684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 491, 982, 1473, 1964, 2455, 2946, 4419, 4910, 5892, 7365, 8838, 9820, 14730, 17676, 21401, 22095, 29460, 42802, 44190, 64203, 85604, 88380, 107005, 128406, 192609, 214010, 256812, 321015, 385218, 428020, 642030, 770436, 963045, 1284060, 1926090, 3852180, 10507891, 21015782, 31523673, 42031564, 52539455, 63047346, 94571019, 105078910, 126094692, 157618365, 189142038, 210157820, 315236730, 378284076, 472855095, 630473460, 945710190, 1891420380]

約数ペア:

[(1, 1891420380), (2, 945710190), (3, 630473460), (4, 472855095), (5, 378284076), (6, 315236730), (9, 210157820), (10, 189142038), (12, 157618365), (15, 126094692), (18, 105078910), (20, 94571019), (30, 63047346), (36, 52539455), (45, 42031564), (60, 31523673), (90, 21015782), (180, 10507891), (491, 3852180), (982, 1926090), (1473, 1284060), (1964, 963045), (2455, 770436), (2946, 642030), (4419, 428020), (4910, 385218), (5892, 321015), (7365, 256812), (8838, 214010), (9820, 192609), (14730, 128406), (17676, 107005), (21401, 88380), (22095, 85604), (29460, 64203), (42802, 44190)]