18331720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{683}}^1$

素因数の和:766

約数の個数: 64

約数和(自身を含む): 45800640

約数和(自身を除く): 27468920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 683, 1220, 1342, 1366, 2440, 2684, 2732, 3355, 3415, 5368, 5464, 6710, 6830, 7513, 13420, 13660, 15026, 26840, 27320, 30052, 37565, 41663, 60104, 75130, 83326, 150260, 166652, 208315, 300520, 333304, 416630, 458293, 833260, 916586, 1666520, 1833172, 2291465, 3666344, 4582930, 9165860, 18331720]

約数ペア:

[(1, 18331720), (2, 9165860), (4, 4582930), (5, 3666344), (8, 2291465), (10, 1833172), (11, 1666520), (20, 916586), (22, 833260), (40, 458293), (44, 416630), (55, 333304), (61, 300520), (88, 208315), (110, 166652), (122, 150260), (220, 83326), (244, 75130), (305, 60104), (440, 41663), (488, 37565), (610, 30052), (671, 27320), (683, 26840), (1220, 15026), (1342, 13660), (1366, 13420), (2440, 7513), (2684, 6830), (2732, 6710), (3355, 5464), (3415, 5368)]