18680025

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 144

約数和(自身を含む): 42747264

約数和(自身を除く): 24067239

約数列:

[1, 3, 5, 7, 13, 15, 17, 21, 23, 25, 35, 39, 49, 51, 65, 69, 75, 85, 91, 105, 115, 119, 147, 161, 175, 195, 221, 245, 255, 273, 299, 325, 345, 357, 391, 425, 455, 483, 525, 575, 595, 637, 663, 735, 805, 833, 897, 975, 1105, 1127, 1173, 1225, 1275, 1365, 1495, 1547, 1725, 1785, 1911, 1955, 2093, 2275, 2415, 2499, 2737, 2975, 3185, 3315, 3381, 3675, 4025, 4165, 4485, 4641, 5083, 5525, 5635, 5865, 6279, 6825, 7475, 7735, 8211, 8925, 9555, 9775, 10465, 10829, 12075, 12495, 13685, 14651, 15249, 15925, 16575, 16905, 19159, 20825, 22425, 23205, 25415, 28175, 29325, 31395, 32487, 35581, 38675, 41055, 43953, 47775, 52325, 54145, 57477, 62475, 68425, 73255, 76245, 84525, 95795, 106743, 116025, 127075, 156975, 162435, 177905, 205275, 219765, 249067, 270725, 287385, 366275, 381225, 478975, 533715, 747201, 812175, 889525, 1098825, 1245335, 1436925, 2668575, 3736005, 6226675, 18680025]

約数ペア:

[(1, 18680025), (3, 6226675), (5, 3736005), (7, 2668575), (13, 1436925), (15, 1245335), (17, 1098825), (21, 889525), (23, 812175), (25, 747201), (35, 533715), (39, 478975), (49, 381225), (51, 366275), (65, 287385), (69, 270725), (75, 249067), (85, 219765), (91, 205275), (105, 177905), (115, 162435), (119, 156975), (147, 127075), (161, 116025), (175, 106743), (195, 95795), (221, 84525), (245, 76245), (255, 73255), (273, 68425), (299, 62475), (325, 57477), (345, 54145), (357, 52325), (391, 47775), (425, 43953), (455, 41055), (483, 38675), (525, 35581), (575, 32487), (595, 31395), (637, 29325), (663, 28175), (735, 25415), (805, 23205), (833, 22425), (897, 20825), (975, 19159), (1105, 16905), (1127, 16575), (1173, 15925), (1225, 15249), (1275, 14651), (1365, 13685), (1495, 12495), (1547, 12075), (1725, 10829), (1785, 10465), (1911, 9775), (1955, 9555), (2093, 8925), (2275, 8211), (2415, 7735), (2499, 7475), (2737, 6825), (2975, 6279), (3185, 5865), (3315, 5635), (3381, 5525), (3675, 5083), (4025, 4641), (4165, 4485)]