639774555

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:321

約数の個数: 128

約数和(自身を含む): 1309409280

約数和(自身を除く): 669634725

約数列:

[1, 3, 5, 7, 15, 19, 21, 23, 35, 57, 69, 73, 95, 105, 115, 133, 161, 191, 219, 285, 345, 365, 399, 437, 483, 511, 573, 665, 805, 955, 1095, 1311, 1337, 1387, 1533, 1679, 1995, 2185, 2415, 2555, 2865, 3059, 3629, 4011, 4161, 4393, 5037, 6555, 6685, 6935, 7665, 8395, 9177, 9709, 10887, 11753, 13179, 13943, 15295, 18145, 20055, 20805, 21965, 25185, 25403, 29127, 30751, 31901, 35259, 41829, 45885, 48545, 54435, 58765, 65895, 69715, 76209, 83467, 92253, 95703, 97601, 127015, 145635, 153755, 159505, 176295, 209145, 223307, 250401, 264917, 292803, 320689, 381045, 417335, 461265, 478515, 488005, 584269, 669921, 794751, 962067, 1116535, 1252005, 1324585, 1464015, 1603445, 1752807, 1854419, 2244823, 2921345, 3349605, 3973755, 4810335, 5563257, 6093091, 6734469, 8764035, 9272095, 11224115, 18279273, 27816285, 30465455, 33672345, 42651637, 91396365, 127954911, 213258185, 639774555]

約数ペア:

[(1, 639774555), (3, 213258185), (5, 127954911), (7, 91396365), (15, 42651637), (19, 33672345), (21, 30465455), (23, 27816285), (35, 18279273), (57, 11224115), (69, 9272095), (73, 8764035), (95, 6734469), (105, 6093091), (115, 5563257), (133, 4810335), (161, 3973755), (191, 3349605), (219, 2921345), (285, 2244823), (345, 1854419), (365, 1752807), (399, 1603445), (437, 1464015), (483, 1324585), (511, 1252005), (573, 1116535), (665, 962067), (805, 794751), (955, 669921), (1095, 584269), (1311, 488005), (1337, 478515), (1387, 461265), (1533, 417335), (1679, 381045), (1995, 320689), (2185, 292803), (2415, 264917), (2555, 250401), (2865, 223307), (3059, 209145), (3629, 176295), (4011, 159505), (4161, 153755), (4393, 145635), (5037, 127015), (6555, 97601), (6685, 95703), (6935, 92253), (7665, 83467), (8395, 76209), (9177, 69715), (9709, 65895), (10887, 58765), (11753, 54435), (13179, 48545), (13943, 45885), (15295, 41829), (18145, 35259), (20055, 31901), (20805, 30751), (21965, 29127), (25185, 25403)]