21464205

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:123

約数の個数: 96

約数和(自身を含む): 44323200

約数和(自身を除く): 22858995

約数列:

[1, 3, 5, 7, 15, 19, 21, 29, 35, 49, 53, 57, 87, 95, 105, 133, 145, 147, 159, 203, 245, 265, 285, 371, 399, 435, 551, 609, 665, 735, 795, 931, 1007, 1015, 1113, 1421, 1537, 1653, 1855, 1995, 2597, 2755, 2793, 3021, 3045, 3857, 4263, 4611, 4655, 5035, 5565, 7049, 7105, 7685, 7791, 8265, 10759, 11571, 12985, 13965, 15105, 19285, 21147, 21315, 23055, 26999, 29203, 32277, 35245, 38955, 49343, 53795, 57855, 75313, 80997, 87609, 105735, 134995, 146015, 148029, 161385, 204421, 225939, 246715, 376565, 404985, 438045, 613263, 740145, 1022105, 1129695, 1430947, 3066315, 4292841, 7154735, 21464205]

約数ペア:

[(1, 21464205), (3, 7154735), (5, 4292841), (7, 3066315), (15, 1430947), (19, 1129695), (21, 1022105), (29, 740145), (35, 613263), (49, 438045), (53, 404985), (57, 376565), (87, 246715), (95, 225939), (105, 204421), (133, 161385), (145, 148029), (147, 146015), (159, 134995), (203, 105735), (245, 87609), (265, 80997), (285, 75313), (371, 57855), (399, 53795), (435, 49343), (551, 38955), (609, 35245), (665, 32277), (735, 29203), (795, 26999), (931, 23055), (1007, 21315), (1015, 21147), (1113, 19285), (1421, 15105), (1537, 13965), (1653, 12985), (1855, 11571), (1995, 10759), (2597, 8265), (2755, 7791), (2793, 7685), (3021, 7105), (3045, 7049), (3857, 5565), (4263, 5035), (4611, 4655)]