28865000

素因数分解:

$2^3\times 5^4\times {\mathrm{23}}^1\times {\mathrm{251}}^1$

素因数の和:300

約数の個数: 80

約数和(自身を含む): 70852320

約数和(自身を除く): 41987320

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 125, 184, 200, 230, 250, 251, 460, 500, 502, 575, 625, 920, 1000, 1004, 1150, 1250, 1255, 2008, 2300, 2500, 2510, 2875, 4600, 5000, 5020, 5750, 5773, 6275, 10040, 11500, 11546, 12550, 14375, 23000, 23092, 25100, 28750, 28865, 31375, 46184, 50200, 57500, 57730, 62750, 115000, 115460, 125500, 144325, 156875, 230920, 251000, 288650, 313750, 577300, 627500, 721625, 1154600, 1255000, 1443250, 2886500, 3608125, 5773000, 7216250, 14432500, 28865000]

約数ペア:

[(1, 28865000), (2, 14432500), (4, 7216250), (5, 5773000), (8, 3608125), (10, 2886500), (20, 1443250), (23, 1255000), (25, 1154600), (40, 721625), (46, 627500), (50, 577300), (92, 313750), (100, 288650), (115, 251000), (125, 230920), (184, 156875), (200, 144325), (230, 125500), (250, 115460), (251, 115000), (460, 62750), (500, 57730), (502, 57500), (575, 50200), (625, 46184), (920, 31375), (1000, 28865), (1004, 28750), (1150, 25100), (1250, 23092), (1255, 23000), (2008, 14375), (2300, 12550), (2500, 11546), (2510, 11500), (2875, 10040), (4600, 6275), (5000, 5773), (5020, 5750)]