221379900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{389}}^1$

素因数の和:684

約数の個数: 144

約数和(自身を含む): 736619520

約数和(自身を除く): 515239620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 271, 300, 350, 389, 420, 525, 542, 700, 778, 813, 1050, 1084, 1167, 1355, 1556, 1626, 1897, 1945, 2100, 2334, 2710, 2723, 3252, 3794, 3890, 4065, 4668, 5420, 5446, 5691, 5835, 6775, 7588, 7780, 8130, 8169, 9485, 9725, 10892, 11382, 11670, 13550, 13615, 16260, 16338, 18970, 19450, 20325, 22764, 23340, 27100, 27230, 28455, 29175, 32676, 37940, 38900, 40650, 40845, 47425, 54460, 56910, 58350, 68075, 81300, 81690, 94850, 105419, 113820, 116700, 136150, 142275, 163380, 189700, 204225, 210838, 272300, 284550, 316257, 408450, 421676, 527095, 569100, 632514, 737933, 816900, 1054190, 1265028, 1475866, 1581285, 2108380, 2213799, 2635475, 2951732, 3162570, 3689665, 4427598, 5270950, 6325140, 7379330, 7906425, 8855196, 10541900, 11068995, 14758660, 15812850, 18448325, 22137990, 31625700, 36896650, 44275980, 55344975, 73793300, 110689950, 221379900]

約数ペア:

[(1, 221379900), (2, 110689950), (3, 73793300), (4, 55344975), (5, 44275980), (6, 36896650), (7, 31625700), (10, 22137990), (12, 18448325), (14, 15812850), (15, 14758660), (20, 11068995), (21, 10541900), (25, 8855196), (28, 7906425), (30, 7379330), (35, 6325140), (42, 5270950), (50, 4427598), (60, 3689665), (70, 3162570), (75, 2951732), (84, 2635475), (100, 2213799), (105, 2108380), (140, 1581285), (150, 1475866), (175, 1265028), (210, 1054190), (271, 816900), (300, 737933), (350, 632514), (389, 569100), (420, 527095), (525, 421676), (542, 408450), (700, 316257), (778, 284550), (813, 272300), (1050, 210838), (1084, 204225), (1167, 189700), (1355, 163380), (1556, 142275), (1626, 136150), (1897, 116700), (1945, 113820), (2100, 105419), (2334, 94850), (2710, 81690), (2723, 81300), (3252, 68075), (3794, 58350), (3890, 56910), (4065, 54460), (4668, 47425), (5420, 40845), (5446, 40650), (5691, 38900), (5835, 37940), (6775, 32676), (7588, 29175), (7780, 28455), (8130, 27230), (8169, 27100), (9485, 23340), (9725, 22764), (10892, 20325), (11382, 19450), (11670, 18970), (13550, 16338), (13615, 16260)]