20213928

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{461}}^1$

素因数の和:512

約数の個数: 128

約数和(自身を含む): 66528000

約数和(自身を除く): 46314072

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 29, 36, 42, 54, 56, 58, 63, 72, 84, 87, 108, 116, 126, 168, 174, 189, 203, 216, 232, 252, 261, 348, 378, 406, 461, 504, 522, 609, 696, 756, 783, 812, 922, 1044, 1218, 1383, 1512, 1566, 1624, 1827, 1844, 2088, 2436, 2766, 3132, 3227, 3654, 3688, 4149, 4872, 5481, 5532, 6264, 6454, 7308, 8298, 9681, 10962, 11064, 12447, 12908, 13369, 14616, 16596, 19362, 21924, 24894, 25816, 26738, 29043, 33192, 38724, 40107, 43848, 49788, 53476, 58086, 77448, 80214, 87129, 93583, 99576, 106952, 116172, 120321, 160428, 174258, 187166, 232344, 240642, 280749, 320856, 348516, 360963, 374332, 481284, 561498, 697032, 721926, 748664, 842247, 962568, 1122996, 1443852, 1684494, 2245992, 2526741, 2887704, 3368988, 5053482, 6737976, 10106964, 20213928]

約数ペア:

[(1, 20213928), (2, 10106964), (3, 6737976), (4, 5053482), (6, 3368988), (7, 2887704), (8, 2526741), (9, 2245992), (12, 1684494), (14, 1443852), (18, 1122996), (21, 962568), (24, 842247), (27, 748664), (28, 721926), (29, 697032), (36, 561498), (42, 481284), (54, 374332), (56, 360963), (58, 348516), (63, 320856), (72, 280749), (84, 240642), (87, 232344), (108, 187166), (116, 174258), (126, 160428), (168, 120321), (174, 116172), (189, 106952), (203, 99576), (216, 93583), (232, 87129), (252, 80214), (261, 77448), (348, 58086), (378, 53476), (406, 49788), (461, 43848), (504, 40107), (522, 38724), (609, 33192), (696, 29043), (756, 26738), (783, 25816), (812, 24894), (922, 21924), (1044, 19362), (1218, 16596), (1383, 14616), (1512, 13369), (1566, 12908), (1624, 12447), (1827, 11064), (1844, 10962), (2088, 9681), (2436, 8298), (2766, 7308), (3132, 6454), (3227, 6264), (3654, 5532), (3688, 5481), (4149, 4872)]