21659880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:355

約数の個数: 128

約数和(自身を含む): 72316800

約数和(自身を除く): 50656920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 61, 66, 88, 110, 120, 122, 132, 165, 183, 220, 244, 264, 269, 305, 330, 366, 440, 488, 538, 610, 660, 671, 732, 807, 915, 1076, 1220, 1320, 1342, 1345, 1464, 1614, 1830, 2013, 2152, 2440, 2684, 2690, 2959, 3228, 3355, 3660, 4026, 4035, 5368, 5380, 5918, 6456, 6710, 7320, 8052, 8070, 8877, 10065, 10760, 11836, 13420, 14795, 16104, 16140, 16409, 17754, 20130, 23672, 26840, 29590, 32280, 32818, 35508, 40260, 44385, 49227, 59180, 65636, 71016, 80520, 82045, 88770, 98454, 118360, 131272, 164090, 177540, 180499, 196908, 246135, 328180, 355080, 360998, 393816, 492270, 541497, 656360, 721996, 902495, 984540, 1082994, 1443992, 1804990, 1969080, 2165988, 2707485, 3609980, 4331976, 5414970, 7219960, 10829940, 21659880]

約数ペア:

[(1, 21659880), (2, 10829940), (3, 7219960), (4, 5414970), (5, 4331976), (6, 3609980), (8, 2707485), (10, 2165988), (11, 1969080), (12, 1804990), (15, 1443992), (20, 1082994), (22, 984540), (24, 902495), (30, 721996), (33, 656360), (40, 541497), (44, 492270), (55, 393816), (60, 360998), (61, 355080), (66, 328180), (88, 246135), (110, 196908), (120, 180499), (122, 177540), (132, 164090), (165, 131272), (183, 118360), (220, 98454), (244, 88770), (264, 82045), (269, 80520), (305, 71016), (330, 65636), (366, 59180), (440, 49227), (488, 44385), (538, 40260), (610, 35508), (660, 32818), (671, 32280), (732, 29590), (807, 26840), (915, 23672), (1076, 20130), (1220, 17754), (1320, 16409), (1342, 16140), (1345, 16104), (1464, 14795), (1614, 13420), (1830, 11836), (2013, 10760), (2152, 10065), (2440, 8877), (2684, 8070), (2690, 8052), (2959, 7320), (3228, 6710), (3355, 6456), (3660, 5918), (4026, 5380), (4035, 5368)]