21559720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5923}}^1$

素因数の和:5954

約数の個数: 64

約数和(自身を含む): 59713920

約数和(自身を除く): 38154200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5923, 11846, 23692, 29615, 41461, 47384, 59230, 76999, 82922, 118460, 153998, 165844, 207305, 236920, 307996, 331688, 384995, 414610, 538993, 615992, 769990, 829220, 1077986, 1539980, 1658440, 2155972, 2694965, 3079960, 4311944, 5389930, 10779860, 21559720]

約数ペア:

[(1, 21559720), (2, 10779860), (4, 5389930), (5, 4311944), (7, 3079960), (8, 2694965), (10, 2155972), (13, 1658440), (14, 1539980), (20, 1077986), (26, 829220), (28, 769990), (35, 615992), (40, 538993), (52, 414610), (56, 384995), (65, 331688), (70, 307996), (91, 236920), (104, 207305), (130, 165844), (140, 153998), (182, 118460), (260, 82922), (280, 76999), (364, 59230), (455, 47384), (520, 41461), (728, 29615), (910, 23692), (1820, 11846), (3640, 5923)]