81270280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{269}}^1$

素因数の和:383

約数の個数: 128

約数和(自身を含む): 228614400

約数和(自身を除く): 147344120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 83, 91, 104, 130, 140, 166, 182, 260, 269, 280, 332, 364, 415, 455, 520, 538, 581, 664, 728, 830, 910, 1076, 1079, 1162, 1345, 1660, 1820, 1883, 2152, 2158, 2324, 2690, 2905, 3320, 3497, 3640, 3766, 4316, 4648, 5380, 5395, 5810, 6994, 7532, 7553, 8632, 9415, 10760, 10790, 11620, 13988, 15064, 15106, 17485, 18830, 21580, 22327, 23240, 24479, 27976, 30212, 34970, 37660, 37765, 43160, 44654, 48958, 60424, 69940, 75320, 75530, 89308, 97916, 111635, 122395, 139880, 151060, 156289, 178616, 195832, 223270, 244790, 290251, 302120, 312578, 446540, 489580, 580502, 625156, 781445, 893080, 979160, 1161004, 1250312, 1451255, 1562890, 2031757, 2322008, 2902510, 3125780, 4063514, 5805020, 6251560, 8127028, 10158785, 11610040, 16254056, 20317570, 40635140, 81270280]

約数ペア:

[(1, 81270280), (2, 40635140), (4, 20317570), (5, 16254056), (7, 11610040), (8, 10158785), (10, 8127028), (13, 6251560), (14, 5805020), (20, 4063514), (26, 3125780), (28, 2902510), (35, 2322008), (40, 2031757), (52, 1562890), (56, 1451255), (65, 1250312), (70, 1161004), (83, 979160), (91, 893080), (104, 781445), (130, 625156), (140, 580502), (166, 489580), (182, 446540), (260, 312578), (269, 302120), (280, 290251), (332, 244790), (364, 223270), (415, 195832), (455, 178616), (520, 156289), (538, 151060), (581, 139880), (664, 122395), (728, 111635), (830, 97916), (910, 89308), (1076, 75530), (1079, 75320), (1162, 69940), (1345, 60424), (1660, 48958), (1820, 44654), (1883, 43160), (2152, 37765), (2158, 37660), (2324, 34970), (2690, 30212), (2905, 27976), (3320, 24479), (3497, 23240), (3640, 22327), (3766, 21580), (4316, 18830), (4648, 17485), (5380, 15106), (5395, 15064), (5810, 13988), (6994, 11620), (7532, 10790), (7553, 10760), (8632, 9415)]