21616455

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:304

約数の個数: 64

約数和(自身を含む): 42393600

約数和(自身を除く): 20777145

約数列:

[1, 3, 5, 7, 15, 21, 29, 31, 35, 87, 93, 105, 145, 155, 203, 217, 229, 435, 465, 609, 651, 687, 899, 1015, 1085, 1145, 1603, 2697, 3045, 3255, 3435, 4495, 4809, 6293, 6641, 7099, 8015, 13485, 18879, 19923, 21297, 24045, 31465, 33205, 35495, 46487, 49693, 94395, 99615, 106485, 139461, 149079, 205871, 232435, 248465, 617613, 697305, 745395, 1029355, 1441097, 3088065, 4323291, 7205485, 21616455]

約数ペア:

[(1, 21616455), (3, 7205485), (5, 4323291), (7, 3088065), (15, 1441097), (21, 1029355), (29, 745395), (31, 697305), (35, 617613), (87, 248465), (93, 232435), (105, 205871), (145, 149079), (155, 139461), (203, 106485), (217, 99615), (229, 94395), (435, 49693), (465, 46487), (609, 35495), (651, 33205), (687, 31465), (899, 24045), (1015, 21297), (1085, 19923), (1145, 18879), (1603, 13485), (2697, 8015), (3045, 7099), (3255, 6641), (3435, 6293), (4495, 4809)]