78042500

素因数分解:

$2^2\times 5^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:127

約数の個数: 120

約数和(自身を含む): 188939520

約数和(自身を除く): 110897020

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 31, 38, 50, 53, 62, 76, 95, 100, 106, 124, 125, 155, 190, 212, 250, 265, 310, 380, 475, 500, 530, 589, 620, 625, 775, 950, 1007, 1060, 1178, 1250, 1325, 1550, 1643, 1900, 2014, 2356, 2375, 2500, 2650, 2945, 3100, 3286, 3875, 4028, 4750, 5035, 5300, 5890, 6572, 6625, 7750, 8215, 9500, 10070, 11780, 11875, 13250, 14725, 15500, 16430, 19375, 20140, 23750, 25175, 26500, 29450, 31217, 32860, 33125, 38750, 41075, 47500, 50350, 58900, 62434, 66250, 73625, 77500, 82150, 100700, 124868, 125875, 132500, 147250, 156085, 164300, 205375, 251750, 294500, 312170, 368125, 410750, 503500, 624340, 629375, 736250, 780425, 821500, 1026875, 1258750, 1472500, 1560850, 2053750, 2517500, 3121700, 3902125, 4107500, 7804250, 15608500, 19510625, 39021250, 78042500]

約数ペア:

[(1, 78042500), (2, 39021250), (4, 19510625), (5, 15608500), (10, 7804250), (19, 4107500), (20, 3902125), (25, 3121700), (31, 2517500), (38, 2053750), (50, 1560850), (53, 1472500), (62, 1258750), (76, 1026875), (95, 821500), (100, 780425), (106, 736250), (124, 629375), (125, 624340), (155, 503500), (190, 410750), (212, 368125), (250, 312170), (265, 294500), (310, 251750), (380, 205375), (475, 164300), (500, 156085), (530, 147250), (589, 132500), (620, 125875), (625, 124868), (775, 100700), (950, 82150), (1007, 77500), (1060, 73625), (1178, 66250), (1250, 62434), (1325, 58900), (1550, 50350), (1643, 47500), (1900, 41075), (2014, 38750), (2356, 33125), (2375, 32860), (2500, 31217), (2650, 29450), (2945, 26500), (3100, 25175), (3286, 23750), (3875, 20140), (4028, 19375), (4750, 16430), (5035, 15500), (5300, 14725), (5890, 13250), (6572, 11875), (6625, 11780), (7750, 10070), (8215, 9500)]