72217100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:423

約数の個数: 72

約数和(自身を含む): 166656000

約数和(自身を除く): 94438900

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 191, 199, 380, 382, 398, 475, 764, 796, 950, 955, 995, 1900, 1910, 1990, 3629, 3781, 3820, 3980, 4775, 4975, 7258, 7562, 9550, 9950, 14516, 15124, 18145, 18905, 19100, 19900, 36290, 37810, 38009, 72580, 75620, 76018, 90725, 94525, 152036, 181450, 189050, 190045, 362900, 378100, 380090, 722171, 760180, 950225, 1444342, 1900450, 2888684, 3610855, 3800900, 7221710, 14443420, 18054275, 36108550, 72217100]

約数ペア:

[(1, 72217100), (2, 36108550), (4, 18054275), (5, 14443420), (10, 7221710), (19, 3800900), (20, 3610855), (25, 2888684), (38, 1900450), (50, 1444342), (76, 950225), (95, 760180), (100, 722171), (190, 380090), (191, 378100), (199, 362900), (380, 190045), (382, 189050), (398, 181450), (475, 152036), (764, 94525), (796, 90725), (950, 76018), (955, 75620), (995, 72580), (1900, 38009), (1910, 37810), (1990, 36290), (3629, 19900), (3781, 19100), (3820, 18905), (3980, 18145), (4775, 15124), (4975, 14516), (7258, 9950), (7562, 9550)]