2499780

素因数分解:

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

素因数の和:756

約数の個数: 48

約数和(自身を含む): 7124544

約数和(自身を除く): 4624764

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 683, 732, 915, 1220, 1366, 1830, 2049, 2732, 3415, 3660, 4098, 6830, 8196, 10245, 13660, 20490, 40980, 41663, 83326, 124989, 166652, 208315, 249978, 416630, 499956, 624945, 833260, 1249890, 2499780]

約数ペア:

[(1, 2499780), (2, 1249890), (3, 833260), (4, 624945), (5, 499956), (6, 416630), (10, 249978), (12, 208315), (15, 166652), (20, 124989), (30, 83326), (60, 41663), (61, 40980), (122, 20490), (183, 13660), (244, 10245), (305, 8196), (366, 6830), (610, 4098), (683, 3660), (732, 3415), (915, 2732), (1220, 2049), (1366, 1830)]