21335720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3313}}^1$

素因数の和:3354

約数の個数: 64

約数和(自身を含む): 57265920

約数和(自身を除く): 35930200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 3313, 6440, 6626, 13252, 16565, 23191, 26504, 33130, 46382, 66260, 76199, 92764, 115955, 132520, 152398, 185528, 231910, 304796, 380995, 463820, 533393, 609592, 761990, 927640, 1066786, 1523980, 2133572, 2666965, 3047960, 4267144, 5333930, 10667860, 21335720]

約数ペア:

[(1, 21335720), (2, 10667860), (4, 5333930), (5, 4267144), (7, 3047960), (8, 2666965), (10, 2133572), (14, 1523980), (20, 1066786), (23, 927640), (28, 761990), (35, 609592), (40, 533393), (46, 463820), (56, 380995), (70, 304796), (92, 231910), (115, 185528), (140, 152398), (161, 132520), (184, 115955), (230, 92764), (280, 76199), (322, 66260), (460, 46382), (644, 33130), (805, 26504), (920, 23191), (1288, 16565), (1610, 13252), (3220, 6626), (3313, 6440)]