15681225

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{251}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 32060448

約数和(自身を除く): 16379223

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 49, 51, 75, 85, 105, 119, 147, 175, 245, 251, 255, 357, 425, 525, 595, 735, 753, 833, 1225, 1255, 1275, 1757, 1785, 2499, 2975, 3675, 3765, 4165, 4267, 5271, 6275, 8785, 8925, 12299, 12495, 12801, 18825, 20825, 21335, 26355, 29869, 36897, 43925, 61495, 62475, 64005, 89607, 106675, 131775, 149345, 184485, 209083, 307475, 320025, 448035, 627249, 746725, 922425, 1045415, 2240175, 3136245, 5227075, 15681225]

約数ペア:

[(1, 15681225), (3, 5227075), (5, 3136245), (7, 2240175), (15, 1045415), (17, 922425), (21, 746725), (25, 627249), (35, 448035), (49, 320025), (51, 307475), (75, 209083), (85, 184485), (105, 149345), (119, 131775), (147, 106675), (175, 89607), (245, 64005), (251, 62475), (255, 61495), (357, 43925), (425, 36897), (525, 29869), (595, 26355), (735, 21335), (753, 20825), (833, 18825), (1225, 12801), (1255, 12495), (1275, 12299), (1757, 8925), (1785, 8785), (2499, 6275), (2975, 5271), (3675, 4267), (3765, 4165)]