256891680

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{178397}}^1$

素因数の和:178418

約数の個数: 72

約数和(自身を含む): 876647772

約数和(自身を除く): 619756092

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 178397, 356794, 535191, 713588, 891985, 1070382, 1427176, 1605573, 1783970, 2140764, 2675955, 2854352, 3211146, 3567940, 4281528, 5351910, 5708704, 6422292, 7135880, 8027865, 8563056, 10703820, 12844584, 14271760, 16055730, 17126112, 21407640, 25689168, 28543520, 32111460, 42815280, 51378336, 64222920, 85630560, 128445840, 256891680]

約数ペア:

[(1, 256891680), (2, 128445840), (3, 85630560), (4, 64222920), (5, 51378336), (6, 42815280), (8, 32111460), (9, 28543520), (10, 25689168), (12, 21407640), (15, 17126112), (16, 16055730), (18, 14271760), (20, 12844584), (24, 10703820), (30, 8563056), (32, 8027865), (36, 7135880), (40, 6422292), (45, 5708704), (48, 5351910), (60, 4281528), (72, 3567940), (80, 3211146), (90, 2854352), (96, 2675955), (120, 2140764), (144, 1783970), (160, 1605573), (180, 1427176), (240, 1070382), (288, 891985), (360, 713588), (480, 535191), (720, 356794), (1440, 178397)]