21391500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1097}}^1$

素因数の和:1132

約数の個数: 96

約数和(自身を含む): 67144896

約数和(自身を除く): 45753396

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 125, 130, 150, 156, 195, 250, 260, 300, 325, 375, 390, 500, 650, 750, 780, 975, 1097, 1300, 1500, 1625, 1950, 2194, 3250, 3291, 3900, 4388, 4875, 5485, 6500, 6582, 9750, 10970, 13164, 14261, 16455, 19500, 21940, 27425, 28522, 32910, 42783, 54850, 57044, 65820, 71305, 82275, 85566, 109700, 137125, 142610, 164550, 171132, 213915, 274250, 285220, 329100, 356525, 411375, 427830, 548500, 713050, 822750, 855660, 1069575, 1426100, 1645500, 1782625, 2139150, 3565250, 4278300, 5347875, 7130500, 10695750, 21391500]

約数ペア:

[(1, 21391500), (2, 10695750), (3, 7130500), (4, 5347875), (5, 4278300), (6, 3565250), (10, 2139150), (12, 1782625), (13, 1645500), (15, 1426100), (20, 1069575), (25, 855660), (26, 822750), (30, 713050), (39, 548500), (50, 427830), (52, 411375), (60, 356525), (65, 329100), (75, 285220), (78, 274250), (100, 213915), (125, 171132), (130, 164550), (150, 142610), (156, 137125), (195, 109700), (250, 85566), (260, 82275), (300, 71305), (325, 65820), (375, 57044), (390, 54850), (500, 42783), (650, 32910), (750, 28522), (780, 27425), (975, 21940), (1097, 19500), (1300, 16455), (1500, 14261), (1625, 13164), (1950, 10970), (2194, 9750), (3250, 6582), (3291, 6500), (3900, 5485), (4388, 4875)]