21706380

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{13399}}^1$

素因数の和:13420

約数の個数: 60

約数和(自身を含む): 68098800

約数和(自身を除く): 46392420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 13399, 26798, 40197, 53596, 66995, 80394, 120591, 133990, 160788, 200985, 241182, 267980, 361773, 401970, 482364, 602955, 723546, 803940, 1085319, 1205910, 1447092, 1808865, 2170638, 2411820, 3617730, 4341276, 5426595, 7235460, 10853190, 21706380]

約数ペア:

[(1, 21706380), (2, 10853190), (3, 7235460), (4, 5426595), (5, 4341276), (6, 3617730), (9, 2411820), (10, 2170638), (12, 1808865), (15, 1447092), (18, 1205910), (20, 1085319), (27, 803940), (30, 723546), (36, 602955), (45, 482364), (54, 401970), (60, 361773), (81, 267980), (90, 241182), (108, 200985), (135, 160788), (162, 133990), (180, 120591), (270, 80394), (324, 66995), (405, 53596), (540, 40197), (810, 26798), (1620, 13399)]