215912500

素因数分解:

$2^2\times 5^5\times {\mathrm{23}}^1\times {\mathrm{751}}^1$

素因数の和:803

約数の個数: 72

約数和(自身を含む): 493468416

約数和(自身を除く): 277555916

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 125, 230, 250, 460, 500, 575, 625, 751, 1150, 1250, 1502, 2300, 2500, 2875, 3004, 3125, 3755, 5750, 6250, 7510, 11500, 12500, 14375, 15020, 17273, 18775, 28750, 34546, 37550, 57500, 69092, 71875, 75100, 86365, 93875, 143750, 172730, 187750, 287500, 345460, 375500, 431825, 469375, 863650, 938750, 1727300, 1877500, 2159125, 2346875, 4318250, 4693750, 8636500, 9387500, 10795625, 21591250, 43182500, 53978125, 107956250, 215912500]

約数ペア:

[(1, 215912500), (2, 107956250), (4, 53978125), (5, 43182500), (10, 21591250), (20, 10795625), (23, 9387500), (25, 8636500), (46, 4693750), (50, 4318250), (92, 2346875), (100, 2159125), (115, 1877500), (125, 1727300), (230, 938750), (250, 863650), (460, 469375), (500, 431825), (575, 375500), (625, 345460), (751, 287500), (1150, 187750), (1250, 172730), (1502, 143750), (2300, 93875), (2500, 86365), (2875, 75100), (3004, 71875), (3125, 69092), (3755, 57500), (5750, 37550), (6250, 34546), (7510, 28750), (11500, 18775), (12500, 17273), (14375, 15020)]