20915087900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{29671}}^1$

素因数の和:29764

約数の個数: 144

約数和(自身を含む): 55631439360

約数和(自身を除く): 34716351460

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 53, 70, 76, 95, 100, 106, 133, 140, 175, 190, 212, 265, 266, 350, 371, 380, 475, 530, 532, 665, 700, 742, 950, 1007, 1060, 1325, 1330, 1484, 1855, 1900, 2014, 2650, 2660, 3325, 3710, 4028, 5035, 5300, 6650, 7049, 7420, 9275, 10070, 13300, 14098, 18550, 20140, 25175, 28196, 29671, 35245, 37100, 50350, 59342, 70490, 100700, 118684, 140980, 148355, 176225, 207697, 296710, 352450, 415394, 563749, 593420, 704900, 741775, 830788, 1038485, 1127498, 1483550, 1572563, 2076970, 2254996, 2818745, 2967100, 3145126, 3946243, 4153940, 5192425, 5637490, 6290252, 7862815, 7892486, 10384850, 11007941, 11274980, 14093725, 15725630, 15784972, 19731215, 20769700, 22015882, 28187450, 29878697, 31451260, 39314075, 39462430, 44031764, 55039705, 56374900, 59757394, 78628150, 78924860, 98656075, 110079410, 119514788, 149393485, 157256300, 197312150, 209150879, 220158820, 275198525, 298786970, 394624300, 418301758, 550397050, 597573940, 746967425, 836603516, 1045754395, 1100794100, 1493934850, 2091508790, 2987869700, 4183017580, 5228771975, 10457543950, 20915087900]

約数ペア:

[(1, 20915087900), (2, 10457543950), (4, 5228771975), (5, 4183017580), (7, 2987869700), (10, 2091508790), (14, 1493934850), (19, 1100794100), (20, 1045754395), (25, 836603516), (28, 746967425), (35, 597573940), (38, 550397050), (50, 418301758), (53, 394624300), (70, 298786970), (76, 275198525), (95, 220158820), (100, 209150879), (106, 197312150), (133, 157256300), (140, 149393485), (175, 119514788), (190, 110079410), (212, 98656075), (265, 78924860), (266, 78628150), (350, 59757394), (371, 56374900), (380, 55039705), (475, 44031764), (530, 39462430), (532, 39314075), (665, 31451260), (700, 29878697), (742, 28187450), (950, 22015882), (1007, 20769700), (1060, 19731215), (1325, 15784972), (1330, 15725630), (1484, 14093725), (1855, 11274980), (1900, 11007941), (2014, 10384850), (2650, 7892486), (2660, 7862815), (3325, 6290252), (3710, 5637490), (4028, 5192425), (5035, 4153940), (5300, 3946243), (6650, 3145126), (7049, 2967100), (7420, 2818745), (9275, 2254996), (10070, 2076970), (13300, 1572563), (14098, 1483550), (18550, 1127498), (20140, 1038485), (25175, 830788), (28196, 741775), (29671, 704900), (35245, 593420), (37100, 563749), (50350, 415394), (59342, 352450), (70490, 296710), (100700, 207697), (118684, 176225), (140980, 148355)]