28351840

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:296

約数の個数: 96

約数和(自身を含む): 74299680

約数和(自身を除く): 45947840

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 89, 110, 160, 176, 178, 181, 220, 352, 356, 362, 440, 445, 712, 724, 880, 890, 905, 979, 1424, 1448, 1760, 1780, 1810, 1958, 1991, 2848, 2896, 3560, 3620, 3916, 3982, 4895, 5792, 7120, 7240, 7832, 7964, 9790, 9955, 14240, 14480, 15664, 15928, 16109, 19580, 19910, 28960, 31328, 31856, 32218, 39160, 39820, 63712, 64436, 78320, 79640, 80545, 128872, 156640, 159280, 161090, 177199, 257744, 318560, 322180, 354398, 515488, 644360, 708796, 885995, 1288720, 1417592, 1771990, 2577440, 2835184, 3543980, 5670368, 7087960, 14175920, 28351840]

約数ペア:

[(1, 28351840), (2, 14175920), (4, 7087960), (5, 5670368), (8, 3543980), (10, 2835184), (11, 2577440), (16, 1771990), (20, 1417592), (22, 1288720), (32, 885995), (40, 708796), (44, 644360), (55, 515488), (80, 354398), (88, 322180), (89, 318560), (110, 257744), (160, 177199), (176, 161090), (178, 159280), (181, 156640), (220, 128872), (352, 80545), (356, 79640), (362, 78320), (440, 64436), (445, 63712), (712, 39820), (724, 39160), (880, 32218), (890, 31856), (905, 31328), (979, 28960), (1424, 19910), (1448, 19580), (1760, 16109), (1780, 15928), (1810, 15664), (1958, 14480), (1991, 14240), (2848, 9955), (2896, 9790), (3560, 7964), (3620, 7832), (3916, 7240), (3982, 7120), (4895, 5792)]