21409020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1433}}^1$

素因数の和:1531

約数の個数: 72

約数和(自身を含む): 65768976

約数和(自身を除く): 44359956

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 83, 90, 166, 180, 249, 332, 415, 498, 747, 830, 996, 1245, 1433, 1494, 1660, 2490, 2866, 2988, 3735, 4299, 4980, 5732, 7165, 7470, 8598, 12897, 14330, 14940, 17196, 21495, 25794, 28660, 42990, 51588, 64485, 85980, 118939, 128970, 237878, 257940, 356817, 475756, 594695, 713634, 1070451, 1189390, 1427268, 1784085, 2140902, 2378780, 3568170, 4281804, 5352255, 7136340, 10704510, 21409020]

約数ペア:

[(1, 21409020), (2, 10704510), (3, 7136340), (4, 5352255), (5, 4281804), (6, 3568170), (9, 2378780), (10, 2140902), (12, 1784085), (15, 1427268), (18, 1189390), (20, 1070451), (30, 713634), (36, 594695), (45, 475756), (60, 356817), (83, 257940), (90, 237878), (166, 128970), (180, 118939), (249, 85980), (332, 64485), (415, 51588), (498, 42990), (747, 28660), (830, 25794), (996, 21495), (1245, 17196), (1433, 14940), (1494, 14330), (1660, 12897), (2490, 8598), (2866, 7470), (2988, 7165), (3735, 5732), (4299, 4980)]