21660048

素因数分解:

$2^4\times 3^7\times {\mathrm{619}}^1$

素因数の和:648

約数の個数: 80

約数和(自身を含む): 63041600

約数和(自身を除く): 41381552

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 81, 108, 144, 162, 216, 243, 324, 432, 486, 619, 648, 729, 972, 1238, 1296, 1458, 1857, 1944, 2187, 2476, 2916, 3714, 3888, 4374, 4952, 5571, 5832, 7428, 8748, 9904, 11142, 11664, 14856, 16713, 17496, 22284, 29712, 33426, 34992, 44568, 50139, 66852, 89136, 100278, 133704, 150417, 200556, 267408, 300834, 401112, 451251, 601668, 802224, 902502, 1203336, 1353753, 1805004, 2406672, 2707506, 3610008, 5415012, 7220016, 10830024, 21660048]

約数ペア:

[(1, 21660048), (2, 10830024), (3, 7220016), (4, 5415012), (6, 3610008), (8, 2707506), (9, 2406672), (12, 1805004), (16, 1353753), (18, 1203336), (24, 902502), (27, 802224), (36, 601668), (48, 451251), (54, 401112), (72, 300834), (81, 267408), (108, 200556), (144, 150417), (162, 133704), (216, 100278), (243, 89136), (324, 66852), (432, 50139), (486, 44568), (619, 34992), (648, 33426), (729, 29712), (972, 22284), (1238, 17496), (1296, 16713), (1458, 14856), (1857, 11664), (1944, 11142), (2187, 9904), (2476, 8748), (2916, 7428), (3714, 5832), (3888, 5571), (4374, 4952)]